My Audi A6 v6 American spec automatic 1998 model does not work slowly; once you remove the leg from the throttle, it will go off. What might be the problem?

—+234806683115

The first thing I will advise you to do is to run a scan on the engine. The result of the scan will guide your mechanic on what to do.

I scanned my Nissan Altima 2005 model and it came up with this code: P1271. What does it mean and how do I fix it? Again, which bookshop stocks your book?

— Ade, +234703927819

P1271 – Air Fuel Ratio Sensor 1 Circuit no activity detected Bank 1. Possible causes: Faulty air fuel ratio (A/F) sensor 1 heater Bank 1; Air fuel ratio (A/F) harness is open or shorted; Air fuel ratio (A/F) circuit poor electrical connection. When was the code detected? The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0V. Symptoms: Engine Light ON (or service engine soon warning light); possible rough engine idle; P1271 Nissan Description

The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions.

I use Honda City 2008 model. Of recent, I have been hearing some funny sounds between the steering wheel and the two front wheels of the car. The sound usually starts after the car has spent about an hour on the road. I have spent much money by changing the shock, bull shin, caliper and repair of the column steering as advised by three different mechanics. However, the noise still persists. Kindly advise on what could be wrong and a mechanic to repair it.

—+234805945939

It’s hard to tell or differentiate a noise or sound when one is not standing physically by the car. My advice will be for the mechanic to check if the car uses electric power steering; because the noise could be from the electric motor or the bearing in the column.

I need your advice on car purchase. I’m in my early 30s and about to purchase my first car. I hope to buy a car around N1m or slightly below. I have had my eyes on Land Rover Freelander for a long time – I learnt that I can get one for that price. In fact, I want something higher than normal car body height, a 4WD, because of our bad roads. However, I was discouraged by a car sales person and another friend who said the car is not ‘handy’ and does not have a resale value, though I don’t have plans for resale. I just want something rugged and always ready to hustle, but still with a touch of class. Please, advise me.

—+234803792730

If you don’t mind the resale value dropping, yes, I can say go for the Freelander. But the maintenance cost could be on the high side sometimes.

I use BMW5 series 1995 model. Since I bought it, the ‘check engine’ light has been on. I wanted to scan it but I was told that the cable point was round and could not be connected to the modern type. Also, the remote control has stopped working. I have changed the battery but it is still not responding. Can I get the car fixed in your place?

—Dele, +23480370468 

The reason why they cannot scan your car is because the car has an OBD1 system, and it will take an OBD 1 scanner to scan it. As for the remote control, it might need to be reprogrammed.

I ride a 1991 model of MPV Mazda, which I bought fairly used with 164,000 km mileage. However, in September, the adjuster broke and could not be repaired. The amount it was sold in the market was half the price of a second hand engine, which I opted for because the engine itself was wearing. Unfortunately, barely a week after fixing the engine, the bus caught fire in the bonnet. Though the fire was put out, some cables were already burnt. After the repair, my gear (auto) does not engage properly again. It moves on gear three no matter the distance. I travel from Ijebu-Ode to Ibadan every two days. What is the effect of this on my new engine and how can it be resolved? My technician said he had tried his best and that I should be using it like that. I tried to scan it but I was told it’s an OBD1 bus and that it cannot be scanned. Please, help me because it burns fuel.

—Adigun Ademola, Ibadan, +2348057043953

All you need is to find a shop with an OBD1 scanner to run the scan for you. I believe your mechanic might have mistakenly tampered with the shift selector switch on the transmission, or the kick-down cable adjustment is too tight.

I live in Ibadan. How do I get Mr. Gbola Oba, as I want to purchase Automedics Book For Motorists.

—G. A. Oke, +23480552301

You can reach him vide 08080806686.

Could you kindly recommend a very good auto mechanic to me in Ibadan for Honda EOD?

—+234802317567

Call Tunde Onakoya on 08034738876

I live in Sagamu, Ogun State. I love your column and had always read it before I got my car less than four weeks ago. Please, direct me to a competent and trustworthy mechanic who can handle Toyota cars. My car is 1999 Toyota Camry. When I start the car in the morning, it brings out white smoke, and the central locking system is not working well. Whenever I enter potholes or gallops, I hear some noise at the back of the vehicle. Could you assist on these, especially, in getting a competent hand here in Sagamu.

— Raphael Idialu, idialu.raphael@yahoo.com

I have this gentleman in Ikorodu whom I’m mentoring. His name is Watchman (Bayelsa man). I highly recommend him and you can reach him on these numbers 08029329516 or 08098002385.

I use Rover 75 2004 model. The car overheats, and though I have replaced the thermostat and the gasket, the problem persists. I live in Akure. What do you recommend, as my mechanic had advised me to change the engine to Toyota?

— Kayode, Akure, +234803552879

I believe the engine in that car is made by Honda and also, you’ll find the same engine in some Acura cars. Did your mechanic check the cylinder head for ‘warpage’? Or, did he resurface the head before changing the gasket? I have a feeling the cylinder head is warped and you are losing compression through it into the cooling system.

I have been experiencing oil leak into the coolant of my Honda Ridgeline V6 2006 model. I have to top up the car’s engine oil every week. My mechanic advised that changing the engine was the best solution. Is this true? How can this problem be solved without replacing the engine? Do you know of a reliable auto mechanic in Abeokuta that I can see? Please help me.

— Friday, Abeokuta, +234802755568

All you have to do is to replace the oil cooler with a new one.

I own a Honda Ridgeline 2006 with 3.5 litres V6 engine. I noticed that the engine oil has been mixing with coolant. This has made me to park the car; otherwise, I have to top up the engine oil whenever I want to use the car. My mechanic here in Abeokuta suggested that I should shop for a new engine that will cost about N300,000 if I can find it. He said the problem was the head gasket, and that any attempt to repair it would be a waste of money. I do not have that kind of money now. Is there any help you can render? The engine mileage is 124,000 miles. The car is still drivable except for the high engine noise and oil consumption.

— Uwem Ekpo, ufekpo@hotmail.com

All you have to do is to replace the oil cooler with a new one. Also, if the problem is with the head gasket, you will experience overheating and the water will be in the oil, not the other way around.

I bought a second-hand saloon Nissan Maxima 2003 model, with a net weight 750 kg. It has automatic gear. I have changed the gear four times and almost all the gear were damaged the same way. Mechanics think the gear pump gets damaged every time. What could possibly be the cause? Kindly advise me on the possible solution.

—Toba, +234803714582

Did you ever try running a scan on this car? If not, please do, because the problem your car is having could be related to electrical/electronic problem which will affect the way the transmission performs. Also, if the car has a salvage history and frame damage is among the damages it sustained in the previous accident, if the frame alignment is not okay it could be affecting or putting pressure on the transmission, resulting in the damage to the transmission.

I use Toyota Sienna, 2005 model. I did a scan and this is the result: Trouble Code PO798 — pressure control solenoid ‘C’ electrical; PO980 shift solenoid ‘D’ control circuit high. You were kind enough to publish a reaction in the Sunday PUNCH of November 25, 2012 to my first e-mail. After changing the ATF, as I earlier mentioned before scanning the vehicle, the mechanic poured eight litres of recommended Toyota Type IV oil, but we now have a leakage problem. I followed your advice and searched for solenoids and also the valve body/transmission valve. Please, can you identify the two specific solenoids: pressure and shift?

Secondly, the rear doors work fine manually, but the doors’ main power engines are faulty; the cables are cut. I suppose the doors will have to be physically examined. Please, we want to fix the transmission/solenoid problem, the doors and the leakage.

—Temitope Paul, pltppt@gmail.com

Yes, it’s possible sometimes to get some codes, which are not the real problems your vehicle has, but could have been triggered by another fault. Before any major repair is carried out, those codes must be researched and be sure they are the problems. Also, make sure the transmission is not over-filled, which will lead to leakage from the breather pipe on the transmission.

I drive a 2002 RAV4. The car has serious transmission issues. The symptoms are harsh shifting, loss of power, launching on second or third gear and hard engagement when it is put in reverse. My research has led me to understand that these problems are caused by a defective engine computer, also known as an ECM or ECU, which also controls the automatic transmission. I’m not sure if this is the same thing as the brain box.

These problems are erratic and only come up intermittently or when the vehicle is warm or have been driven for a specific time. Sometimes it happens one day and the next morning it does not show. For example, if I stop at a red light and when continuing, the car moves like it is carrying a very heavy load, that is because the vehicle is starting at second or third gear instead of the first gear.

My question is, can you help me repair or replace this ECM? I really need to sort it out so that the transmission or the gears/gearbox is not damaged. If not, could you direct me to where I can?

—Babatunde Koiki, 23480931629

You are perfectly right about your findings on the vehicle’s ECU; I believe the TCM is incorporated together with the engine computer (ECU). You are better off getting a new or rebuilt computer from the US and replace it. Continuous use can and will damage the transmission permanently.

I have a Century Buick 2001 model. Recently, I changed the transmission but the performance is not encouraging. Can I get someone in Ikorodu to check it out for me?

—Giwa, +234802088541

I have this gentleman, Watchman (Bayelsa man), in Ikorodu who I mentored. I can recommend him; you can reach him on these numbers 08029329516 or 08098002385.

I ride a Nissan Xterra 2003 model. A panel beater working on the fuel tank ended up cracking the fuel pump casing. What is this and how can I get it replaced as my car is currently with them? Any attempt to ignite the car leaves fuel pouring under the back seat. What do I do?

—+234802342254

Yes, you can call my workshop number 08132570006, but we will be closing for the year on December 21.

I drive a Honda Accord 2008 model 2.0EX. I observed that the ‘check engine’ light and air bag light were coming on occasionally over a period of time. Then the car was not having trouble starting in the morning until about two weeks ago when the key light started flashing. The engine would only start when the key light goes off. For the first time in over four years of driving the car, which I bought brand new from Honda Place in 2008, the engine stopped running while in motion, though it started almost immediately I kicked it. The computer diagnostics report listed the following codes: P0604, P1659, 32-10, 56-31and 63-10. Kindly advise on how to resolve them.

—Soji, +234803327788

P0604 Control Module Random Access Memory. Clear the codes and retest the system. If the code remains, the control module must be replaced to correct this problem. A new module must be programmed with the correct software/calibration. Engine cranking or key on for five seconds; and the Control module detected a problem with the Random Access Memory function. The control module performs an internal self-test on its Random Access Memory (RAM) or read/write memory. If this self-test fails, this code is set. Internal fault detection is handled inside the particular controller.

P1659 — the electronic throttle control system (ETCS) control relay malfunction. It is a relay used in the drive-by wire system.

When the voltage from the ETCS control relay is not detected for a set time, after the ETCS control relay is turned on when the ignition is turned to ON in its second lock, or when voltage is not applied for a set time when the throttle actuator is operating, a malfunction in the ETCS control relay power switch is detected and a DTC is stored.

I use a Ford Transit diesel engine bus model 2000. Please, can you recommend a good diesel mechanic for me?

—Michael, Ikorodu, +234802412771

I am sorry at this time I cannot help.

My Volkswagen Jetta 2000 model is consuming too much fuel and spews black smoke. The mechanic advised me to change the air flow meter, which I did, but it still did not improve the situation. What should I do?

—+2348035244547

What you really need to do first is to run a scan on your car’s power train system. The result of the codes will guide your mechanic on what to do.

I’ve just bought a Toyota RAV4 2002 model, automatic. Whenever I start moving, it jerks when selecting the second gear but continues to run smooth after that until I slow down and I’m about to take off again. What could be the problem? How do I solve it? I live in Igando; do you have a mechanic around the place and do I have to run a scan?

—+234802900934

Yes, you need to run a scan on it. But sometimes, you will get some codes related to transmission faults; in most of these cases on this particular brand and model, the problem is with the ECU.

I use a Nissan Navara diesel engine. After changing the fuel pump, I started noticing other problems. Now, it has packed up. The mechanics and electricians in Awka where I live seem incompetent. Can you recommend a mechanic and an electrician in the east?

—Dickson, +234808709870

Elias is an alumnus of Automedics Training Institute and he’s based in Awka. You can reach him on 08030769896.

My dad is trying to purchase one of these cars: a Nissan Pathfinder 2005, Honda Pilot 2005 or Infinity MDX 2005. Kindly advise on which to purchase and enlighten us on its performance, durability and fuel consumption.

—Adegbenro Isaac, frankmolaventures@gmail.com

Jeep is a brand in a class of SUVs and MDX is made by Acura not Infinity. I will advise against the Pathfinder because of the damage usually caused to the transmission when the radiator eventually starts to leak coolant into the transmission. The other two are both Honda products.

The fuel gauging system of my Honda CRV 2002/2003 model is giving me some headache. Soon after I acquired the car early this year, the car was jerking and we thought the fuel pump was the cause. It was changed, though we later lost the engine of the car. After the engine was replaced with another one (Bora), the fuel gauge has been malfunctioning. At first, the gauge would stay down, indicating empty tank even when the tank was not empty; at other times, it would indicate full tank whereas the tank was almost empty. Several technicians have checked it. The gauge and the clock have been replaced at different times, but the problem persists. What do you think may be the problem? I am writing from Port Harcourt.

—Collins, megacollins77@yahoo.com

If both the gauge and tank switches have been replaced, then the problem has to do with the electrical wiring circuit.

I use Odyssey ’95 model. Recently, I discovered that ‘D4’ was blinking, while ‘DRL’ appeared on the dashboard. What is the implication and solution?

—+23480668873

The only implication is that it could cause a serious damage to the transmission. Please, run a scan on the transmission with an OBD1 scanner as soon as possible.

I’m about to bid for a car being offered for sale online in the United States. It’s a Toyota Highlander 2003 model. The issue with it is that it has been submerged in flood (not salt water), so the engine doesn’t start, and nothing shows on the dashboard. Should I go ahead, bid for it and have it shipped to Nigeria?

—davpraise@yahoo.com

It is not advisable to buy a flooded vehicle; albeit, they are sold very cheap abroad, but they come with all the frustrating electrical/electronic problems that can be imagined. It’s therefore imperative to encourage people wishing to buy US-imported vehicles from January to do history checks on the vehicles, so as to guide against buying hurricane Sandy-flooded vehicles brought into Nigeria by unscrupulous car dealers.

I drive a manual 1995 Mazda 626. Some months ago, it had overheating issue because the fan failed. The auto electrician that worked on it changed some connection on the fan, promising it would never fail again. Now, the car drives rough and stalls on idle. What can I do, because it also consumes fuel a lot and the acceleration is very slow? If I have to run a scan, can you recommend a place in Lagos for me?

—fataiabiona@yahoo.com

The only place I can recommend will be closed till January 7, 2013. And I will advise you to let the electrician go over his job again. The mistake could have been from the electrical job done on the car.

‘Maint Req’ has been flashing on the dashboard of my Toyota Sienna 2004

model. What does it mean?

—+234805466459

The ‘Maint Req’ means it is due for service, and it has to be reset manually after the lube service by the technician.

Please, refer me to a good mechanic in Abuja for my Nissan Pathfinder 2008 model.

—Funsho, +2347058518512

The Automedics is opening a facility in Abuja on or before February 2013.

I reside in Surulere and I have a 2001 Toyota Camry. I discovered recently that the car does not move as expected when accelerating and the RPM goes higher, sometimes almost reaching the red alert. What could be the problem and can you recommend anybody that can help solve the problem?

—Folorunsho Abiodun, follyabbey2002@yahoo.com

The problem you have has to do with your transmission. It does not shift when it is supposed to. I believe you will need to replace the transmission. But you should do a scan before you start spending any money.

Could you kindly advise me on the durability/ruggedness of this vehicle and what to check out for before buying a second-hand car used in Nigeria, with mileage of about 137,000 km to date, which does not appear to have been involved in an accident before?

—Sunny, nmesufat@yahoo.com

You did not mention the brand and model of the vehicle. But if the vehicle is well maintained, you can buy it.

My Honda CRV 2000 model was scanned and this is the result: P0420 Catalytic converter system efficiency below threshold. Bank 1. What should I do?

—+234703551300

Anything could have caused this code to be triggered. P0420 the heated O2 sensor between the engine takes a wave form (voltage reading to determine the air/fuel mixture), then the mixture travels through the catalyst and is cleaned and comes out to the second O2 sensor. The computer checks these to make sure they are different and that the catalyst is doing its job by changing (cleaning) the exhaust flow.

The reason you are having this code is because both sensors are reading the same, which means that the converter isn’t doing its job. This means that the catalyst is bad, the heated second O2 sensor is defective, or the second O2 sensor circuit is open/shorted. The answer to your problem would be first to make sure that this is the only code that your car is throwing (to make sure another problem isn’t causing this one). If P0420 is the only code showing, you will want to check through the entire exhaust system from the engine exhaust manifold back to the muffler, to make sure you have no exhaust leaks. If no leak is found, I would still go over the wiring of the sensors to the ECU to make sure they are not shorted. Rerun the scan and run a data stream to make sure your fuel trims are where they should be also.

I bought a second-hand Nissan Xterra 2000, but ABS light is on. Again, the fan will not work until it is increased to the highest (4). What can I do?

—Aladejebi Olanrewaju, aladejebiolanrewaju66@gmail.com

For the ABS, the only way to find out the problem is to run a scan on the ABS system. As for the fan, the fan control switch will have to be replaced.

How many kilometres must a 2002 model Highlander undergo before it is due for servicing?

—Gani, Gwagwalada, +234805358306

I will say between 3,000 and 5,000 miles.

I can fix some little stuff in cars and do some wiring too. But I want to learn more and advance in automobile repair. Do you have any contact number through which I can reach you? I would be glad if you can take me under your arm to train and groom me.

— timiajibade@yahoo.com

You can enroll for the Foundation or the Auto Electrical Classes of the Automedics Mechatronics Training Institute that’ll be commencing on January 15, 2013.

I came across a post detailing the setting up of automobile service centre. I have been nursing this dream for a while and I think this is the right time for me to do that. Also, I believe your advice will be of great help.

—Olumide Taiwo, creativemide@live.com

We mentor many auto-maintenance and repair workshop owners/entrepreneurs nationwide. You must e-mail Mr. Gbola Oba at info@automedicsafrica.com for a one-on-one mentorship meeting.

I need advice concerning my Primera P11 wagon that I’ve just purchased. I noticed that the radiator fan is always working whenever the car is operational and the car temperature does not exceed 32 degrees centigrade, which I feel is not good for the optimum performance of the car. How do I resolve this issue before it affects the engine?

—Opeyemi Asaolu, opeyemiasaolu@yahoo.com

The only way out is to reverse the way the fan operates to the manufacturer’s specified format.

I drive a Toyota Sienna 2002 and it seems to consume much fuel. When I had a scan, I got the following codes: P1135 and P1155. What is the solution?

—Biola, +234802353314

The P1135 is a low current malfunction on the A/F O2 heater circuit of Bank 1 sensor 1. Ideally, you need to test the voltage at the computer PIN A/F O2. It should read 12 volts. Within a minute or two, the voltage should drop to 0 to 2 volts when the computer turns the ground circuit on to energise the circuit and heat up the sensor. Then it will toggle between 5 and 10 volts, depending on the heater circuit demand. If the voltage is not 12 volts, then you need to check the voltage at the sensor. If the computer never drops the voltage, then the driver is bad in the computer. Ninety per cent of the time, the AFR/O2 sensor is bad; but in some rare cases, I have seen them take out the computer also. Bank 1 Sensor 1 is the sensor in the manifold by the firewall. Make sure you check the 25 amp A/F heater fuse. This code could also trigger the P0325 if it is allowing the engine to burn excessive fuel; which will cause detonation in the engine and trigger P0325. The two codes are pointing to your Oxygen/Air fuel sensors, which will negatively affect the fuel consumption of the vehicle. You will need to replace all the O2 sensors with new ones.

I flew back into Nigeria on Saturday, December 22, 2012, after months of driving through tens of thousands of kilometres in rural and urban USA, in search of bargains for the equipment and tools with which we will kit the eight new shops that Automedics Ltd is opening in Abuja, Ibadan and Lagos on/before the first week of February 2013.

The following Monday Gbola Oba and yours truly set out to visit some of the facilities on what used to be the Lagos-Badagry Expressway. He had intimated me with the poor condition of that so-called expressway before we set out, having told him that it had been a long time I had plied the road.

The ditch-infested (to say pot hole-infested would amount to sheer euphemism) war zone track I drove on from Igbo-Elerin junction to Badagry does not deserve being called a road, not to talk of express road. To think that this represents the busiest portion of ECOWAS’ network of roads under the direct management of the Federal Government of Nigeria is to see the vacuity of our claim to regional leadership.

If the Federal Government cannot do the road for the benefit of our citizens who inhabit that stretch, can it at least do it for the sake of the vanity of our leaders who go about boasting about how Nigeria is the giant of Africa?

Briefly glancing at the past year, 2012, in my life’s metaphorical Sport Utility Vehicle’s rear-view mirror, I can’t help seeing the edifying images of some uplifting fellow travellers seated all around me on this God-glorifying joy ride. Obviously, my wife, Elizabeth Mopelola Idowu, shares the front passenger seat with me. I can only thank the Lord for her resounding love, understanding and perseverance.

The good health and prosperity of our children, both at home and abroad, are also images of joy and thanksgiving that I owe God endless gratitude for. My creative, loyal and superlative team members in the Automedics family, too, are good enough reasons for me to shower adulations on Him.

Lastly, society-impacting establishments like The PUNCH newspapers and other electronic media organisations that have creatively allowed my life to be a blessing to that of many in the Nigerian motoring public and, indeed, you (yes, you, the readers) are the beauty of the ride. To all and one: Thank you!

I want to buy a Volkswagen Sharon for commercial transportation; please, can I use a six-plug engine for that purpose?

—+234810511505

Yes, absolutely. The key point here is maintenance.

I bought a Mercedes Benz 180 C Class, 2000 model on December 24, 2012. On the dashboard are these warning messages: four faults and one malfunction. Is it safe to drive it to your workshop? If not, advise me on what to do. And, how can I access the temperature level? I can’t find it.

—Ighodalo, Shangisha, Ketu

Yes, it is safe to drive the car, as long as the engine is still running okay and the transmission shifts.

Please, how can I get a copy of Automedics Book for Motorists in Port Harcourt/Onitsha area, and how much is it?

— Anyi, +234818900845

We’re looking forward to getting distributors for the book and our other unique Automedics products in the South-South and South-East.

I saw a 2005 model of Accord, which I want to buy; but I noticed that the ‘check engine’ light is on, so I had it scanned. The error code was P0141-O2 Sensor Heater Circuit Bank 1 Sensor 2. Is this problem a major issue? I know it has to do with abnormal fuel consumption, but I wonder if it affects other things. Please, how can this be solved? Is the sensor to be replaced? If yes, how do I go about it?

— Iyke Chinaka, iykech2002@yahoo.com

You can still buy the car as long as you use the fault to bargain for reduction in its selling price. All you have to do is just to replace the O2 sensors.

I live in Ado-Ekiti. Where would you recommend for the scanning of my 1994 Honda Academic car? The ‘check engine’ light and that of ABS has been on for some time now.

— Daodu Patrick, Ado- Ekiti

I don’t have anybody in my database that’s in Ado-Ekiti.

The ‘check’ light of my 2003 Toyota Corolla has been on since I bought it on February 2, 2012. Please, what might the problem be?

The only way to find out what the problem is all about is to run a scan on the power train system.

I read in the SUNDAY PUNCH about your plans to open new workshops in Abuja and Ibadan. When will it be the turn of Port Harcourt?

— Jandy, +234806329871

If we get any contact of a petrol filling station dealer in a good location in Port Harcourt, whose lube bay could be used to start a small maintenance and repair workshop, we will consider kick-starting something in Port Harcourt with a crop of our alumni and equip the centre with modern equipment.

I drive Honda Accord 2003 model. I live in Akure. The gasket got burnt and was replaced. Thereafter, the car won’t kick once. Apart from that, it was making a heavy noise whenever I wanted to take off on a low gear. I returned it to my mechanic and he told me that he changed the valves. He also asked me to replace both the plugs and the plug coil, which I did. However, the problem persisted. I then took it to a Honda specialist who told me that it was the camshaft that had to be replaced before the timing belt problem could be corrected. He said it would cost N15,000 and that the job would be done in Lagos. I was discouraged.

I then took it to an engineer, one Mr. Olugbenga Olajide’s workshop at Akure for scanning. This is the result:

PO122: Throttle positionsensor/accelerator pedal position sensor/switch A low input.

PO113: Intake air temperature sensor-high input.

PO341:Camshaft position SensorA, bank1 range/performance problem

PO496:Evaporative emission system-high purge flow

I was told the problem was camshaft sensor, whose replacement I paid for and the guy assured me that the work of the car was now okay and I could travel with it.

To be fair, the excessive heat of the engine reduced, with the RPM now hovering above 3 when warming, unlike what he told me on test-running when I took it there initially that it did not rise above 3, no matter how hard the accelerator was pressed.

On discovering the sluggishness and the noise after a little stop, I returned it and was told it was the throttle sensor, which he said he had also rectified but till date, still gives me problems. Another Honda mechanic and rewire told me it was a fuel pump problem, which I also changed last Friday. Yet, the problems of sluggishness when taking off and heavy sound still persist.

What really is the problem? What does the scan result mean? What do we do to rectify it?

—Simbo Olorunfemi, simboor@yahoo.com

I have a feeling that whoever did the cylinder head job did not get or set the timing belt right. It’s probably off about 45 degrees.

I use Honda ‘98 model called Baby Boy. It changes gear regularly without any trouble; but on one of my journeys to Kaduna, I tried to overtake a vehicle but the kick down did not work. Rather, it dragged. So, I reported the problem to a mechanic who eventually destroyed the gearbox. I have since bought three gearboxes, but the works had always led to other problems. Now I’m frustrated. What do I do?

—Nathaniel

I believe you haven’t done the right thing. And what is that? You primarily need to scan the transmission. The result will give you an idea of what the problem is and from this, the technician will have an idea of what to do.

How do I carry out a scan? Do I need to buy a scanner or take it to any auto-medics service centre? Can you recommend any automedics centre, if necessary?

In addition, you mentioned enrollment for Automedics Mechatronics Training Institute. How can one apply for this course?

—Folorunsho Abiodun

To register for Automedics training, all you have to do is text your email address to Gbola Oba on 08080806686 and he will email the e-copy information package to you.

I have a Honda Civic 2000 model that has served me well so far, until the timing (I don’t know if that’s the word) belt cut while in motion. Since then, it has never been the same. I’ve replaced the belt, but the car would still not move. A mechanic changed the bearing and the car started moving, but the performance is not as smooth as before. Can you tell me the problem and can it be fixed once and for all in your shop?

— stellakola007@yahoo.co.uk

Yes, it can be fixed in my workshop; but it has to be assessed and diagnosed first before we can proceed on any repair.

Do you have workshops in any other state in the South-West apart from Lagos?

— Dele Ajayi, +234806304448

Ibadan is coming on stream on/before the end of February 2013.

I drive a 1999 Toyota Carry and it uses between 2.9 and 3.6 per kilometer, depending on the traffic situation, though I also use air conditioner all the time. Please, is it consuming too much? What is the appropriate consumption for a four-cylinder engine?

— Stephen Clarke, clarkestephen39@gmail.com

I don’t understand your question. Did you mean 2.9-3.6 kilometre per litre? If it is the way you wrote your question to me, then it’s abnormal. But if it’s the other way around, it’s okay.

I live at Apapa GRA and drive Audi A4 2006 model. Where can I take my car for servicing and repair? I have been cheated by too many mechanics. I bought the car brand new, but now, things are beginning to go wrong with it, which is understandable due to its age. Most times, my problem is that my mechanic says the parts are scarce and then wants to compromise with other parts.

—+234803306382

My shop is at Ikeja, inside the LTV Complex, Agidingbi Road, opposite Coca-Cola.

Toward the end of last year, just before I travelled to the U.S. in October, our in-house strategy team reviewed the materials at our disposal from the enquiries submitted by grass-roots mechanics and a sizeable percentage of members of the motoring public.

From the review, it was clear that we must package short, on-the-job training schemes in manual and automatic transmission systems for roadside mechanics. 

In furtherance of that corporate policy, we shall start 2013 by offering a free two-day transmission seminar for mechanics on January 17 and 18, 2013, inside the Ikorodu Town Hall, starting from 10 ‘O’clock in the morning.

This will be the initiation of the rotational geo-political training schemes agreed to, with the leaders of NATA and MOMTAN branches in Lagos State for their grass-roots members in the five original divisions of the state.

Topics to be briefly covered are: Automatic transmission/transaxle principles; hydraulic components and control systems; automatic transmission/transaxle diagnosis and in-vehicle service and automatic transmission/transaxle service unit repair.

Let’s meet at Ikorodu, so that we can come out of the skills empowerment training as ‘Ogas’ in solving transmission problems.

I use Honda Baby Boy 2000 model. When I was driving, I noticed the D4 light blinking while the car was moving at a slow pace. So, I parked and turned off the ignition. After some time, I turned it on again and the blinking stopped. Sir, what could be responsible for the blinking D4 light?

—+234 805 733 595

The D4 is the same as the MIL light on the instrument cluster; the flashing is an indication of malfunction within the transmission. The only way to find out what is wrong is to run a scan on the transmission. The result will guide the technician on the exact line of action.

I have a Peugeot 406 saloon car, 2005 model, which I bought brand new.  Unfortunately, it is overheating now. Our mechanic/electrician has changed the relay and the thermostat, still the car overheats. Do you have a competent Peugeot mechanic that can diagnose what the problem is and then fix it, instead of the unending guesswork that my mechanic is doing? We reside at Osapa London on the Lekki Epe Expressway.

— Maureen Igwebe, +234803300817

At the moment, we don’t have any presence on the Lekki-Ajah axis, but before the end of February, we are going to have an outlet on that axis. However, if you can, bring the car to our location in Ikeja, inside the Lagos Television Complex, Agidingbi, opposite Coca-Cola, Ikeja.

My car, Ford Taurus SEL 2006 Model (under two years in Nigeria) misfires when I’m driving, yet it doesn’t have much power to move. The power output gets worse and the fan belt gets noisy whenever I turn on the air conditioner. On such occasions, it crawls rather than run. The OBD test I did gave the following codes: P0353, P0420, P0645. Can you resolve the problem?

—+234813778634

P0353 Ignition coil C primary/secondary circuit malfunction. The COP (coil on plug) ignition system is what is used on most modern engines. There is an individual coil for each cylinder that is controlled by the PCM (power train control module). Two wires are dedicated to each coil. One is a battery feed usually from the power distribution centre. The other wire is the coil driver circuit from the PCM. The PCM grounds/ungrounds this circuit to activate or deactivate the coil. The coil driver circuit is monitored by the PCM for faults. If an open or a short length is detected in the driver circuit for coil number 3, a P0353 may set.

Also, depending on the vehicle, the PCM may shut down the fuel injector to the cylinder. Symptoms: Engine misfire may be present or intermittent faults. Potential causes: Short to voltage or ground on COP driver circuit. Open on COP driver circuit. Loose connection at coil or broken connector locks. Bad Coil (COP). Faulty power train control module: Possible solutions – Is the engine misfiring presently? If not, the problem is likely intermittent. Try wiggle testing the wiring at the third coil and along the wiring harness to the PCM. If manipulating the wiring causes the misfire to surface, repair the wiring problem. Check for poor connection at the coil connector. Verify the harness isn’t misrouted or chafing on anything. Repair as necessary. If the engine is misfiring presently, stop the engine and disconnect the number three coil wiring connector. Then start the engine and check for a driver signal to the number three coil.

Using a scope will give you a visual pattern to observe, but since most people don’t have access to one, there’s an easier way. Use a voltmeter in AC Hertz scale and see if there’s a Hz reading of between five and 20 or so that indicates the driver is working. If there is a Hertz signal, then replace the number three ignition coil. If you don’t detect any frequency signal from the PCM on the ignition coil driver circuit indicating the PCM is grounding/ungrounding the circuit (or there is no visible pattern on the scope if you have one), then leave the coil disconnected and check for DC voltage on the driver circuit at the ignition coil connector. If there is any significant voltage on that wire, then there is a short to voltage somewhere. Find the short and repair it.

If there is no voltage on the driver circuit, then turn the ignition off. Disconnect the PCM connector and check the continuity of the driver between the PCM and the coil. If there is no continuity, repair the open or short to ground in the circuit. If continuity is present, then check for resistance between ground and the ignition coil connector. There should be infinite resistance. If there isn’t, repair the short to ground in the coil driver circuit. If the ignition coil driver signal wire is not open or shorted to voltage or ground and there is no trigger signal to the coil, then suspect a faulty PCM coil driver. Also, keep in mind that if the PCM driver is at fault, there may be a wiring problem that caused the PCM failure. It’s a good idea to do the above check after PCM replacement to verify there won’t be a repeat failure. If you discover that the engine isn’t misfiring, the coil is being triggered properly but P0353 is continually being reset, there is the possibility that the PCM coil monitoring system may be faulty.

P0420, the heated O2 sensor between the engine takes a wave form (voltage reading to determine the air/fuel mixture), then the mixture travels through the CAT and is cleaned and comes out to the second post-O2 sensor, the computer checks these to make sure they are different and that the CAT is doing its job by changing (cleaning) the exhaust flow.

The reason you are having this code thrown is because both sensors are reading the same, which means that the converter isn’t doing its job. Now, this means that the CAT is bad, the heated second O2 sensor is defective, or the second O2 sensor circuit is open/shorted.

The answer to your problem, to the best of my knowledge, would be first to make sure that that is the only code that your car is throwing (to make sure another problem isn’t causing this one). If P0420 is the only code showing, you will want to check through the entire exhaust system from the engine exhaust manifold back to the muffler, to make sure you have no exhaust leaks. If no leak is found, I would still go over the wiring of the sensors to the ECU to make sure they are not shorted, Re-run the scan and run a data stream to make sure your fuel trims are where they should be also. If it’s only the P0420, I would guess there is a vacuum leak somewhere.

P0645: Air conditioning clutch relay circuit malfunction

Possible causes: Open or short air condition clutch relay circuit; poor air condition clutch relay electrical connection; failed air condition clutch relay; or fused ignition switch output circuit open.

I was recently offered a Mercedes Benz C180 2000 model, but it’s to be converted to left hand drive. Is it advisable to do so and if it is, where do I go to convert it?

— Oluseye, +234808878956

I will say don’t do it. The reason is because of the likelihood of your not being able to get all the right parts, especially the electrical wiring harness. And the other disadvantage is suspension, steering and electrical problems.

Do you have an office in Abuja or any scan centre you could recommend to me? I want to be sure that all is well with my car before I embark on a long trip with it. The car is a Toyota Camry 1994/5 model which I bought in August 2012.

—+234809947474

No, I don’t have one yet; but on or before the end of February, Automedics will have a presence in Abuja.

Through your weekly column, I learnt you would be in Ibadan by the end of February. I was elated and I have started telling my friends that eventually, we shall be saved from our ‘abe igi’ technicians! Can we know the address of the workshop? Thanks for remembering Ibadan.

— Adigun Ademola, +23480570439

I will let you know the address in due course.

I use Infiniti QX4 02 Model. One of my mechanics said the auxiliary gear should be at auto, while another said it should be 2WD. I want the one that will save fuel without affecting the performance of the gear. Is there any technology that will make the car consume less fuel?

—+234705531701

The best option I will advise you to use will be the 2WD option. It will save you fuel consumption and also, due to the nature and condition of our roads, the Auto option will not be advisable.

I use Honda Accord 2005 model. The automatic transmission system broke down in Ibadan last year and was repaired. Of late, the car has been finding it difficult to move, especially during heavy traffic and at red lights, as one needs to get to between 5,000-6,000 rpm before it jerks forward .

—+23480370989

Though your question is not complete, but if the engine has to get to the rpm you’ve specified to get the vehicle moving, it can easily damage the engine, because the rpm is too high with no load on it. In effect, the bearings are getting punished unnecessarily. However, before you do any other thing on the vehicle, may I implore you to get it scanned and send me the codes pulled from the vehicle. This is because it may just be the TCM playing tricks on the mechanic working on it.

Is it okay to remove the thermostat of my Isuzu Axiom jeep? My air conditioner mechanic said the engine gets too hot for the A/C compressor and prevents its effectiveness, even though temperature gauge reads normal.

—+23480970868

The thermostat has nothing to do with the A/C compressor not starting or working optimally. If you remove it, it will increase your fuel consumption and also will not affect how the A/C works.

I have a ‘99 model VW Beetle (Bug) that I have just purchased. It’s automatic. On motion, the gear jerks. I’ve had mechanics check it and I was told the filter and gear oil needed to be changed. These were done, but the jerking still persists. Kindly advise me. And,where is your nearest workshop as I stay in Egbeda, Lagos?

—Olajide Olufemi

I believe what your vehicle needs is re-adaption. Someone must have worked on the fuel/electronic system or on the transmission electrical circuit. And anytime you work on any of the areas on any VW, most especially Passat, and do not do re-adaptation, it always affects the way the transmission shifts, and it could permanently damage the transmission.

I want to know the cost of your services for my Audi A4 engine change, windscreen change, general mechanism touches. I also want to know if you can come to the University of Ibadan to pick the car.

—Okunye, +234708247055

I don’t speculate cost without physically assessing the vehicle. Again, the vehicle will have to be brought to my workshop.

I’ve been using a 2000 model Camry since December 2011. My mechanic advised that I should change the radiator to 2 or 3-cell type and connect the fans direct. Since the temperature gauge stays in the middle, I was not worried. Up till now, I have never topped the coolant reservoir. In the last two weeks, I’ve had to top it, as the water level drops. On close look, I saw that it leaks through a crack about 6” on top of the radiator. Please, advise.

—Folorunso, +234808876835

The only advice is to just replace the radiator with the original type that is in the vehicle. Also, leave the fan the way it was designed to run. If you do what your mechanic says, it will increase your fuel consumption and also negatively affect the way the engine performs.

I use Lexus RX 330 2004 model. I changed the following things in the car last week: leakage, tie rod, and socket, with the bushing of the front tyre. I also changed the two front tyres and did the wheel balancing and alignment. After all these, I noticed that while driving, once the speedometer rises up to 60, the slip indicator light comes on, showing traction control system; it will begin to blink and make noise. This won’t stop until the speed comes down to 40. This is the first time I am experiencing such in the last three years since I’ve been using the car. What should I do?

—Ayo Akinpelu, ayoakin@yahoo.com

There must have been a mistake or an oversight in the replacement of the steering parts. It will need to be re-inspected and repaired as necessary. Also, run a scan on the chassis system. The result of the scan will also help.

I drive a Mazda Primacy 2000 model. I had issues with the alternator, and it was changed. However, the battery icon on the dash board still blinks. I need to run an electrical scan; where can it be done? I stay in Ojo.

—Adeyemi, +234802853306

The problem you are having might not be the alternator, but in the charging system’s wiring circuit, which scanning will not help. What you need is a good electrician.

Do you also give answers on power bike? I love to own a convertible V-Boot, but I was told it’s problematic. Could you advise me on it?

—Moses Kayode, moses_kayode@yahoo.com

I don’t know of any problem the vehicle exhibits in terms of the power train, but it’s possible they are talking about the convertible mechanism. On the power bike, I only work on mine.

How long is an SRS airbag designed to last? Where and at what cost can one change it?

—+234803229258

I believe it is designed to last in the vehicle until it’s deployed due to an accident or carelessness. The cost depends on the type, model and brand of vehicle.

 I want to buy an SUV now that I am retired. Because of our roads and little money available, which is better in terms of maintenance: a RAV4 or Highlander (both 2010 models)? Also, I want to know if it is advisable to buy any car from the U.S. in view of the hurricane sandy effect. —Chuks Okechukwu, +234803372576

I will go with Highlander, though they are both of the same brand and family of vehicles. But my advice to you is not to get any vehicle already submerged in flood, as it could lead to a prolonged nightmare season, especially because of the electrical problems associated with flooded vehicles.

I drive a 1999 Lexus RX 300. It has been doing pretty well until January 12 when, on starting it in the morning, I noticed a CEL symbol coming on and simultaneously, the engine performance changed. I switched off the engine and started again. The engine sound became normal but the CEL light did not go off.

—+234818344327

I believe you need to run a scan on the vehicle before you start any repair work on it. The result will guide the mechanic on what to do.

Kindly recollect my sms to you from Akure when burglars went away with my Honda Accord 2005 model, which was later rescued. The car is now in Lagos, as I prefer to do the programming and get a new key from your workshop. When will you want the car brought to your workshop?

—+234803777940

You can bring it anytime.

I use Nissan Premier and I have just serviced the car. The mechanic advised me to use coolant. So, how much is it and which type of coolant (pink or green colour) should I use? Also, how much is the gas for car air conditioner?

—+234812801715

You can only use the same colour you have in it. Also, it has to be 50-50 water-coolant mixture.

Please, where can I get original plugs for Kia Cerato 2009 model?

—Busayo Olansebe, busayo17@yahoo.com

You can only get the plugs from the manufacturer’s parts dealer. Just make sure you get the right specifications.

My business venture entails getting cars for buyers here in Nigeria from the United States. These cars are salvaged from flood are usually bid for and bought ‘as is.’ I am taking out a loan to run this venture and would appreciate it if you could advise me on such cars.

I intend fixing them up here before selling them and I am also wondering which brand is better suitable for such venture — Benz, Nissan, Honda or Toyota (all of 2006 till date).

—Mayowa adetunji, mayowaadetunji2001@yahoo.com

My views and advice are two-fold: be ready to deal with electrical problems and very angry/frustrated customers. If I have to be honest with you, I will say don’t do it. Yes, you can make money if you get lucky with some of them; but if you have to do it, only go for the ones that are running.

How can I get the expiration date of a tyre?

—+234 810 517 470

The four-digit numbers enclosed in either a circle or square on the wall of the tyre explains the week of the year of manufacture (that is the first two figures) and the last two figures indicate the year of manufacture. You will calculate five years from that week of the year of manufacture to conclude when exactly the shelf-life of the tyre expires. It may not literally disintegrate on the expiration of the five-year period from the date of manufacture, but the integrity of the rubber and chemical composition would have diminished.

I need clarification on the following: (1.) What is the difference between 1.6L and 2.0L (both 16 valves) in terms of fuel consumption? (2.) Can the size of tyre increase fuel consumption e.g. 185/rim 14 and 205/rim 16? Is there a difference in terms of fuel consumption?

—totseg@yahoo.co.uk

To your first question: the fuel consumption is only slightly different (that you may not even notice) because the 1.6 is a relatively smaller engine. To your second question, the answer is yes.

The September 29 and 30, 2012, skills upgrade seminar for roadside mechanics, auto technicians, automotive mechatronics engineers, students of automotive engineering, fleet managers and auto lovers held in Lagos was superlatively successful.

More than 2000 participants from all over the country, who registered free with six past copies of the SUNDAY PUNCH took part in the  two-day event. The feedback from participants, the Lagos branches of NATA and MOMTAN (the two main auto workers associations that we technically mentor), the National Open University of Nigeria’s Department of Lifelong Learning and Workplace Training (that issued the attendance certificates to participants) and corporate sponsors were very impressive.

The seminar series is now scheduled to roll into the Federal Capital Territory, Abuja, on March 9 and 10 2013, and the Garden City, Port Harcourt, on April 6and 7, 2013.

Prospective participants, apart from sending us an e-mail or a text message with the content “Reserve a seat for me in your Abuja seminar”, can start accumulating five copies of this column from today. Each beneficiary must show five past copies for stamping before being allowed to enter the seminar venue.

My name is Ngozi, I just moved back from the United States and brought my car with me. Upon getting to Lagos, I did a quick checkup and my car was deemed okay to drive to the east. On the way from Lagos to Abia State (a 12-hour drive) the car over heated and  I was told that the top gasket was burnt.

The top gasket has been changed and the mechanic and several people I’ve spoken to said when a car comes in from the US the thermostat has to be removed. The thermostat has been removed but still, the car is over heating.

The mechanic’s new solution is to change the radiator from a one cell to a double cell. I disagree with the diagnosis because his reason was the radiator took a beating when I drove a long distance. I have driven cars in the US for 15 hours and the radiator was not a problem. Please any insight into this because I am weary of mechanics here and actually excited about the opening of your auto shop in Abuja. I am desperate, please please help me out. Looking forward to your reply. Thank you! Thank you!!

Ngozi

ngotum@gmail.com

I quite agree with your analysis of the cooling system. The the originating problem, I believe that caused the overheating that is yet to be solved. Yes, it is possible the radiator could be the problem if the cell on the lower tank is clogged with sediments. But changing the radiator to a double cell does not solve the problem, the mechanic still needs to find out why the vehicle overheats in the first instance. He needs to check all the parts associated with the cooling system e.g. water pump, radiator fan, thermostat, radiator, leaks, and most importantly crack/warped cylinder head.

I’m a fresh student of the Yaba  College of  Technology, studying mechanical engineering.

I saw your article in PUNCH newspaper. Sir, as a fresh student I will like to join the group of great mechanical engineers  just to improve my knowledge.

— Akintunde oluwaseyi

You can come to our office inside the Lagos Television Complex, Agidingbi, Ikeja, and see us.

I wish to purchase a USA factory refurbished car of my choice. I may opt for a Toyota product

I understand that it is more expensive than a ‘used’ car; but guarantees performance almost like a brand new car. Can you enligthen me on the advantages  and the disadvantages of this option?

Please do not include my email address or full names in PUNCH Automobile pages. Thanks

—Evans

There is nothing like a factory refurbished car; dealer refurbished? Yes, but you are still buying a used car. If you are buying from an auction, only buy under green light and make sure you have the option of arbitration, if there is any problem with the car. Mind you, if the car gets here you are stuck with it. Also if you can get the VIN# of the car, do a search online to get the history of the car from carfax.com or any other suitable website.

I have a Nissan Altima’04 model I would like you to help assess as its defied all known repairs.Do you open on saturdays and what time?

— +2348054141534

Yes, we open on non-environmental sanitation Saturdays between the hours of  9am and 1pm.

I recently purchased a 2000 model Galant ES 3.0 automatic and the driving is smooth. However I noticed that when I engage the gear in reverse, the car makes this noticeable jerk for a second but you probably won’t notice if you are not the one driving the car or if you are outside the car. I also noticed that this jerk is reduced if I press the brake pedal completely I gear into reverse mode.

An automechanic checked and said I need to replace ‘engine mounting’ for both sides of the engine and also brake pads. I have replaced for a side and the front brake pads but it still happens when I engage reverse gear. And now SRS check comes up on the dashboard after this mechanic carried out his supposed repairs.

Please what do you advise?

Regards,

— Ade, 08065540681

Yomi Iyanda <yomidarl@yahoo.com>

The only way to find out why the SRS light stays on is to run a scan on the system itself. It’s possible the mechanic mistakenly tampered with the impact sensor while replacing the mounts. Also your mechanic needs to check and make sure the engine idle is not too high, and if any of the transmission mounts is faulty, you will still feel the same jolt.

I use a Honda Accord ‘05 model.It was recently involved in an accident in which the airbag on the steering wheel deployed.After replacing the affected parts,including the radiator support assembly and the steering wheel with a live airbag, the airbag indicators shows passenger airbag off steady.Please what do I do to solve that problem?

— Ronke Afolabi +2348033117289

Sometimes when the airbag gets deployed in an accident, it affects the seatbelt tensioner which also gets deployed. You’ve only replaced the steering airbag without confirming if the belts are affected together with the SRS ECM. The best option you have right now is to run a scan on the SRS system to ascertain what is causing the problem.

I use a Toyota Camry 1999 model. Recently, l discovered that if l want to start moving the car it does not move as before. I have to press the accelerator very well before the car moves. I changed the gear and oil.But problem persists. Please what do l do? My mechanic said l need to buy another one

— +2348023377778

Before you buy another transmission, please run a scan on the transmission, the fault could just be a solenoid that needs replacement or cleaning.

I use a Toyota Avensis 2004 model, my A/C has been faulty after a flood some years back, I tried some repairs but to no avail. How can you help?

— +2348023850144

I will need to see the car before I can be of any help.

What I intend to ask is-Nissan Serena 2.0L engine with tyre size 205/60/R16 and 2.0L engine with tyre size 185/R14 Will there be any difference in terms of fuel consumption? Thanks. James, Ikorodu.

— +2348024447692

Yes! Just a minute difference, the one with the 205/60/R16, will consume more fuel.

Sir, I want to buy Chrysler Space  SUV. How durable is the vehicle especially for our road. Thanks. Dare omolayo (dasamol@yahoo.com)

— +2348038272375

It is okay for our roads, it’s just the maintenance and parts that are on the high side.

I drive a Toyota Corolla 2001 model. It began to emit smoke and consume oil last year,so my mechanic serviced the engine. After he coupled it,the oil light began to show just as oil supply ceased.He changed the oil pump two times before one began to work only to stop again after one month.He began to change the oil pump again without any result.At the end, he brought down the engine to clear the oil channels.When he started the engine, the oil light went off only to reappear during a test drive.What do I do ? He is suggesting I should buy another engine if I must enjoy the car again.I brought the car from Texas just three years ago. Please advise me.

— +2348032408769

I believe the bearings have failed inside the engine crank case, due to lack of lubrication. He should have replaced all the necessary parts when he was rebuilding the engine. Parts such as the connecting rod, crank bearing, oil pump and all the rings and more. You might be better off replacing the whole engine.

On your Sunday January 19 column, you mentioned that VW cars, especially Passat, need re-adaptation after certain repairs? Could you please explain further?

— +2347026382077

Re-adaptation is a process of resetting the vehicle’s on-board computer with an electronic contraption (usually a diagnostic tool). It is to ensure that the vehicle’s on-board computer will accept the newly installed part and instruct it to work as the original factory installed part that was replaced.

I bought this car from the original buyer as second- hand in March last year. Between that time and now, I have changed the clutch disk and plate thrice. When I asked the mechanic why the frequent replacement, his explanation was that I still press the clutch pedal while the car is in motion. I told him that it is not true. Before this car, I have used up to four cars with both manual and automatic gear. Before this last change of the disk, I was almost driving the car like automatic gear because I was always conscious of not pressing the clutch pedal except when I’m in serious hold-up which cannot be avoided in Lagos. Please I need your advice. My high regards, ‘Konkons I E

— cfostech@yahoo.com

The problem, I think, is either from the parts being used or the transmission has a defective component that’s putting pressure on the clutch system. Also one part I did not hear you mention is the release bearing which could play a vital role in how the system performs.

Thank you for the explanations your always make on Automedics. Please, what should be considered before buying a car, is it the mileage or year of manufacture? And which is better to manage between Toyota Camry and Avensis? Romu Puegeren. +2348154331565

Both mileage and year of manufacture are important. But what I will advise you to pay keen attention to is the condition of the vehicle, especially the power train, chassis/frame and the electrical. Also make sure you check the history of the car and the accuracy of the mileage online.

Since catalytic converters are meant to work with unleaded petrol and the one sold in Nigeria is leaded, what measures can be taken to avoid their malfunctioning?  +2348023211034

The only measure we have is to use additive and not to keep quiet about the injustice being done to us and the environment (lead kills and triggers violent conducts in people). But you need to be sure of the quality and the type of additive you use.

Thank you the good job you are doing on this page. I am a regular reader of Automedics. It is educating and enlightening. I have a 2003 Toyota Sienna model.  Its rate of fuel consumption is about 1litre to 3km. I consider this rate of fuel use excessively high. Is this rate of fuel consumption okay for the car? Yinka, +2348177231142

The fuel consumption is abnormal; you should be getting about 6-7km per litre. My advice is that you run a diagnostic scan on the powertrain system. The result of the scan will guide the technician on what to do.

I have a Mazda MPV 98model 4×4 drive. The O/D light was flashing and also the gear makes noise when in P or N position. I did a scan and got code P1512 (VRIS solenoid 1 circuit fault). A day later I was in gridlock and the gear refused to move again. I decided to replace it but the cost of getting the exact type of it is dear for me. Hence, I was advised to buy a 2×2 drive transmission. Please I want to know if this 2×2 drive transmission can actually work for me and what are its implications? If I decide to repair the 4×4 gear, will it actually be repaired properly? Thank you. stanley.obiakor@frieslandcampina.com

The code you have will not affect the transmission from working. P1512 has to do with intake manifold runner. You need to rerun the scan with a scanner that will adequately communicate with the transmission. Based on the result, I will be in a better position to help. But I believe you can with the two drive transmission provided the mechanic will observe all the necessary steps he needs to take in order not to have any challenge after the conversion.

I want to know how to get your magazines in Lagos or PH. Besides, how do I change the d mass air flow in my car? I am afraid these mechanics might not know what I am talking about. Thanks. olukayode.ajibolade@ymail.com

I do not have any magazine at the moment, except this medium on Sundays. The only other thing you may want to get is the book which is a compendium of my past pieces on this column. To change or replace the Mass Air flow, the location is between the air cleaner housing and the throttle body.

I bought a used Honda Odyssey 2000 Model in May 2012. As at the time of purchase and delivery, the vehicle’s performance was okay.

Two months later, the vehicle developed a gear problem which necessitated replacement of the complete gear. In the process, front absorber linkage of the driver side was cut because it could not be removed. It was welded after the replacement of the gear. Ever since, the steering wheel has been vibrating as from around 120km/hour upward and the braking system has been making a strange odd noise each time I apply the brake. In my desperation to restore the car to its default condition, I have visited several mechanic workshops to get the problems fixed but to no avail. I have even changed the hub, brake discs, ball joints, tie rods and so on. But still the problem persists. What do you advise I do?

Thank you! Tayo Folajin, tayofolajin@yahoo.com. 08034278421

The welded part will have to be replaced with a good one. Also you need to take the vehicle to a good alignment shop where they can check all necessary parts concerning the steering and suspension. Some of the joints and bushings could have been affected or damaged during the installation of the transmission.

Good day, I use a Toyota Highlander limited, V6 2002 model. The battery is flat and I intend buying a new one. But I cannot locate the spec (the AH spec) sticker or any indication of the spec on the old battery. The vehicle manual did not come with the Highlander from the US. Can you assist with the battery amp hours          I need to procure? Thank you. +2348032023069

You can ask an auto electrician to check the amperage of the alternator and also the cold cranking amps (CCA) by doing a starter draw test. With these you will have all the specs you need from the battery.

Well done. Your article in SUNDAY PUNCH is enlightening and saving a lot of people from quacks that fleece motorists. I learnt recently that Toyota Camry engine can be used to replace Murano’s and that it works perfectly well. Is this true and do you handle such job? Your professional advice will be highly appreciated. Thanks. Matthew, +2348166621667.

I do not know of such thing, but nothing is impossible in the automotive world. The only thing I would say is that it might work but not without any problem. I personally do not do it.

My Toyota Landcruiser 2001Model is faulty. Could you please link me with someone in Port Harcourt that can assist? When the ignition cranks, it picks but does not start the engine. I came across your column in SUNDAY PUNCH and I am really impressed by the way you give solutions to vehicle problems.  +2348107870111

 I will advise you run a scan on the vehicle before you start any repair on it.

My car is displaying ‘service engine soon’ on the dash board. And I have serviced it three times now within 4 months yet still indicating it.Osanyinbi Ebenezer, oluwaseun201@yahoo.com

“Service Engine Soon” does not mean you need to service the vehicle; it’s an indication of a fault within the powertrain system. What you need to do is to run a scan on the vehicle, from the result you will have an idea of what to do.

I have a problem with my car air conditioner. It does not work anymore. The car is a 2007 kia rio. Please can you recommend a good car a\c mechanic? Ifeoma, +2348028965251

I don’t have anybody I can recommend at the moment. But if I can see the car I might be of help.

Please explain the use of Air bag in a vehicle. How will one know that the one in own vehicle is working?Gani Shittu, Abuja, +2348022943670

Airbag is part of the supplemental restraint system (SRS). Anytime you see it light up and it stays lighted it’s an indication of a fault within the system. If you run a scan on the system you will know what to do.

What is your advice on the use of extreme fuel treatment for cars? +2348023650314

I do not know the characteristic of the treatment you mention, so I cannot talk about it. I encourage the use of fuel treatment, due to the type of fuel we get in this part of the world.

It is a fact that the core mandate of open universities across the world is to develop human capital within groups/ persons who are usually mature and employed.

The National Open University of Nigeria, whose Vice Chancellor, Prof. Vincent Tenebe, who is passionate about developing the skills of artisans in vital trades, has, through its Centre for Lifelong Learning and Workplace Training, packaged skills upgraded programmes, with industry leaders and facilitators such as Automedics, to positively impact the quality of workmen in key sectors of the economy.

Last September, NOUN partnered with Automedics in issuing certificates of attendance to the participants who attended the Lagos seminar.

We are glad to inform those looking forward to participating in the Abuja and Port Harcourt seminars that NOUN has reiterated its resolve to award certificates of attendance for participants. To register for the two-day skills upgrade seminar in Abuja on March 9 and 10, 2013.

Interested participants are requested to text ‘Register me’ to the number or email address displayed on the top of this page.

The free two-day seminar scheduled for the Federal Capital Territory, Abuja, on March 9 and 10, 2013, is further taking the shape of our past successful events.

Since 2003 (even before I finally returned home from the USA where I sojourned for almost three decades) I have always come to Nigeria to assist in training mechanics in Lagos to understand how to solve the peculiar problems of modern vehicles and in using basic automotive mechatronics tools.

This pro bono service to my compatriots in the automotive maintenance and repair industry was borne of the fact that I started in the trade too from the backwaters of Mushin’s slum in the seventies. Nothing draws the water of compassion in me more than the need to better the quality of life of mechanics in Nigeria. And to also help the average Nigerian vehicle owner get value for their money.

This is why the Automedics team is happy that the Nigerian Automobile Technicians Association, Abuja (through the persuasion of NATA’s biggest branch, Lagos, that informed it about our antecedents as mentors to them) has signed up too for the 2-day seminar. So if you are a NATA member in Abuja wanting to participate in the seminar you can contact your branch chairman to indicate interest.

Are you wondering why you need to tell your leadership that you want to attend a free seminar, for auto technicians and mechanics that anybody can freely register for? Well, it is because registered NATA members who may voluntarily desire to get the National Open University of Nigeria’s Centre for Lifelong Learning and Workplace Training’s “Certificate of Participation” in the two-day event will get massive discount compared to non-NATA members. Also, corporate sponsors of the event who will give out gifts to participants and the Automedics technical support team will give priority to unionised auto maintenance artisans.

To register for the two-day skills upgrade seminar, text or email “Register Me” to the number or email address herein stated. If you are a reader of this column in Abuja and you use modern vehicles and you need to understand the computers-on-wheels plying our roads, you can also register free of charge. And if you do not have the time, remember to tell your mechanic/s too to register and update his or her skills. There will be special sessions for registered female participants to demystify common automobile problems.

NB: Smooth FM on 98.1FM in Lagos has joined the family of reputable media organisations such as Punch newspapers, Radio Continental and the pioneer Lagos Traffic Radio on 96.1FM that are providing free interactive platforms where Nigerian motorists can get help on their vehicles and where auto technicians/mechanics can sharpen their skills. The radio channels give the Automedics free one-hour airtime daily during the evening-drive time in Lagos to engage with the motoring public. This will be starting soon.

Please, I use Honda 98 Accord (Baby Boy). I noticed that the colour of my ATF fluid is turning brownish, but not malfunctioning. What do you advise me to do and what type of ATF oil do you recommend?

+23480338180

My recommendation will be for you to replace the fluid. But I have to warn you that if the clutches inside the transmission are worn already (if the transmission fluid has gone dark brown or totally black and it is smelling burn), changing the fluid could expose or manifest any underlying fault that is already in the transmission. So, mechanics should warn vehicle owners before changing fluid in this kind of condition.

I trust your week has been great. I need you to clear the air about Honda cars with the way the front tyres ball joints get easily broken down. A lot of people say this is peculiar with Honda cars. I want your advice as I intend buying a 2003-05 model. Is this peculiar to the sedans alone or the jeep (Honda) is also prone? Thanks. Oloidi Olumide, olumiol@yahoo.com>

I believe the problem is peculiar to sedan cars and not the SUVs. And this is due to the way they are designed, not considering the condition of our bad roads and the impact of the damage the roads cause on the ball joints.

Sir, I have just changed my gear (ford widstar, 2002) but the OD off/on light keeps coming on. Please, what is the implication of that on the gear system? +2348081342929

The flashing of the OD light is an indication of faults in the transmission. You will need to run a scan on the transmission to find out what the problem is specifically.

I drive a Toyota Camry 2000 model V6. I realised that the ‘catalyst’ in the exhaust has been removed and I am made to believe that this causes excessive consumption of gasoline. I was advised to buy a second hand. What should I do?

Bamidele, Iju, Lagos, dede_ni@yahoo.com

The absence of the catalytic converter from the exhaust system will definitely affect the fuel consumption of your car. The O2 sensor will not be able to monitor anything from the exhaust by-product. If you can replace it with either new or used one, it will save you money down the line.

Please, I want you to advise me on what the problem could be with a Mazda (Ford) B3000 2000 model. The vehicle is not starting as appropriate, the anti-theft installed by the manufacturer keeps blinking when the vehicle is being started. The auto-electrician scanned the vehicle and said there was lost memory from the brainbox in recognising the ignition key. I bought another brainbox and even told the auto-electrician what I read in the vehicle manual that the vehicle’s anti-theft should be serviced by a technician before the vehicle could start. But he did not know where to locate the device. He has changed the fuel pump and the vehicle is yet to start and light has not got to the plugs. +2348033914525

The only way to get the vehicle started is to reprogramme the original ECU. But before you do that you can try to start the vehicle with a spare key if you have one. Sometimes keeping the key with any interference objects (such as phones, on TV and with computers) could distort the transponder signal from the chip in the key.

The fuel consumption of my Nissan Primeria is highly alarming. Efforts to correct this development have not been yielding any positive result. I discovered that my gear is also not selecting. Could this be responsible for the fuel consumption? Also, the check engine sign is on the dash board. Olayinka, +2347032418123, olayinkaolukoya@gmail.com

With the check light on, it is best to run a scan on the powertrain system, the result will guide the technician on what to do or go about in solving the problem.

I stay in Ado Ekiti and I drive Toyota Tundra 2001. It showed that the check light is on, and after scanning, the oxygen sensor set was said to be replaced. There is a steering rack leakage and exhaust seal leakage. I want to bring it down to Lagos. What is the financial cost? +2348028279273

The truck will have to get to our workshop in Lagos before we can make any assessment about the cost of repair.

Please what is the necessary maintenance caution I need to take before buying a Honda Baby Boy 2000 Model? My mechanic said I should not buy it due to its persistent auto gear problem. Is this true and is there any other thing you think I should know about the car before my buying it?

I would appreciate your candid advice because the car has been my dream ride for some time now. Deji Peters, dejipeters23@yahoo.co.uk

My advice before you buy the car is to do an inspection on it. If allowed, take it to a competent workshop and let them assess it electronically and physically. Any minor fault found on it, can be used by you as a leverage to bargain on the price of the car. Your mechanic’s fear I believe has to with the solenoid that acts up on it sometimes. But if you do pre-inspection you will know if there is any problem.

The ‘MAINT REQD’ light of my Toyota Camry 09 model came on and I intend servicing the car. How do I reset the light manually? Kolade Ipinmoroti, +2348034489619

Resetting the “MAINT REQD” is not what I can explain through this medium. It has to be practicalised.

I drive a Mazda mpv and recently after servicing the car, it began to shoot from the exhaust. The mechanic discovered that two of the three plugs were soaked with fuel and we have not been able to determine the cause of the leakage, +2348023293557

Please run a scan on it. Also make sure the technician did not mix up the firing order.

I am a regular reader of your column. My Mazda mpv 2001 model ran hot on me. My mechanic changed the gasket, water pump, belts that were broken, oil and oil the filter. When he tried to start the car, it would not start. It was not turning well even when new battery is used. Please what do I do? +2348039261853

I believe the mechanic did not set the timing belt right. If you get to my office, I will give you for free the manufacturer’s diagram on how to install the timing belt.

I drive a 2001 Toyota Camry. It always touches the ground when I climb a speed breaker or a small pothole. I suspect it is the shock. Please advise me on what to do. Alfred Ijah, 234-805-341-2983, alffi29@yahoo.com>

The problem is with the shock absorber’s strut spring. Replace the spring and you should be fine.

Thank you so much in enlightening the public. It will ensure safety on the road if the pieces of advice are adhered to. +2347030913587

Thanks for the compliment.

 Do we have automobile training schools in Nigeria? I will love to enroll into one. Thanks. +2348070602347

Yes, we run a training school in Lagos.

I have a Toyota Rav4 2003 model. The car raves high sometimes without the gear shifting properly. Also, sometimes on speed, the car jerks as if one is starting a manual car. I was told the gear sensor is responsible. It has been worked on but the problem persists, jideogungbe@yahoo.co.uk

Please run a scan on the transmission and let me have the result.

Good day sir, thanks for all your replies to the questions asked. I drive a Nissan Primera 2003 model and it suddenly started smoking heavily. It would not run fast especially with the change of its gear.  The airflow meter was changed all to no avail. What do I do sir? Thank you. Lemmy Ahgro, 08092347007, layiagoro@hotmail.com

The best option you have is to run a scan on the engine, the result will guide the mechanic on what to do.

Please, somebody wants to sell Chrysler Jeep 2000 model (direct used from USA) to me but people are saying the car is problematic. What do you advise I do? Chimex, +2348063148623

If the vehicle is in good condition and you have it inspected before you buy it, I do not know of any peculiar problem with the brand.

I must confess that you are good and highly intelligent. I marvel at the way you explain and instruct, you almost persuade me to become a grease monkey. Really, I appreciate you sir, God bless you! Long live Automedics. Morenike Jibowu, +2348098790900

Thank you for the compliment, yes we can use one more “Grease monkey” like you or me in country.

Good day sir. Please I do not know how to set up my car’s Bluetooth with my mobile phone. I drive a Lexus 2006 model, +234 803 820 7464

Please go through your manuals.

In the last six years, since I started to publicly mentor the Nigerian motoring public to get value for money on their automobiles including auto maintenance, I have also encouraged repair technicians and artisans to earn their deserved respect. One thing I’ve noticed to be effective, however, is to let the average motorist or technician lead me in determining howt to help him or her as it concerns his or her vehicle.

I discovered this fact many years ago as a young auto technician in Los Angeles, California, US, where inner city vehicles of the same make with vehicles from the suburbs would manifest different categories of problems from each other.

This is why it is now an important rule of engagement for us in the Automedics family to let the beneficiaries of our training programmes define the topics of interest to them (and the topic/s so defined will naturally instruct what we base our training topics on).

Therefore, in this tradition, the prospective beneficiaries of the Abuja two-day seminar scheduled for the March 9 and 10, 2013, should either email or text us the topics of interest to them. The two commonest issues will be the focus of the seminar. Please keep them coming.

Many vehicle owners and auto technicians out there daily face frustrating circumstances because of some simple problems that can be solved from their smartphones (if, like in most other parts of the world, they know how to get value from the expensive handsets they are holding!)

Majority of the smartphones out there are Internet-enabled and the Internet is one of the most invaluable resource tools that is now conveniently available to motorists and auto technicians to solve vehicular maintenance and repair problems.

Many motorists, indeed mechanics, do not know that there are automotive subject/specific windows online that cover just about any topic in automotive (dare I say there is a dedicated forum for everything about the vehicle you are riding, however old it may be).

This is why I pity many vehicle users and technicians out there who battle with some recurring problems on their vehicles, or the vehicles they are working on, and when they (after having spent enormous amount of money and time on the never-ending problem) get to people like me, they are made to realise that the problem/s had been long identified by the manufacturer and may have even led to a recall.

But because most of the vehicles here came in through the grey-market and, worst still, most of the licensed dealerships here do not honour their global brand owners’ recall, the average Nigerian motorist is left in no-man’s-land.

Should you, either as a motorist or auto technician, need to use a dedicated online automotive resource facility you can visit www.facebook.com/automedicsnigeria for free help.

NB: Today is my wife’s (Elizabeth Mopelola Idowu’s) birthday. And I am overjoyed to felicitate and celebrate her as a prominent pillar of support to me. Congratulations love and I wish you many more years in good health, happiness and prosperity.

We write to intimate you, the beloved readers and fans of this column, of the unavoidable postponement of our earlier advertised Abuja Seminar between March 9 and 10, to April 6 and 7, 2013.

We feel obligated to avail you this information as soon as we decided it in-house because of our appreciation of your esteemed support.

We already have over 800 prospective participants who have voluntarily registered for the two-day Abuja seminar. Also, the local branch of the Nigerian Automobile Technicians Association, under the leadership of Alhaji Yahooza, and the MOMTAN leadership in the neighbouring Nasarawa and Niger states, have indicated their unalloyed support too.

I have, in the not so distant past on this page, emphasised the importance of a set of good tyres to the optimal performance of a vehicle, and the comfort and safety of the vehicle’s driver and occupants.

Tyres, as vital components of an automobile, are very important but often ignorantly presumed by motorists to just be mere appendages of the vehicles. Presumptions, especially based on ignorance, may be bliss, but it is usually very costly. And to save readers from the life-devastating consequences of tyre-borne financial and environmental waste: like burning fuel and other physical mishaps easily caused by bad tyres, I will enumerate the important information a motorist needs to know about tyres before homing in on our specific topic for today: tyre speed ratings.

A typical tyre carries lots of helpful information in the forms of markings (numerical and alpha-numeric specifications) on its side walls: the number stated beside the “psi” indicates the maximum number of air pressure to be pumped into the tyre as recommended by its manufacturer. It’s however important to stress that a motorist must give priority to the psi specified by the manufacturer of the vehicle (which can be found on the plate sticker usually attached to the driver’s side door-post) on which the tyre is to be used.

Tyres also bear a four-digit numerical mark which states the week and the year of its manufacture (for example, “4106” means the forty-first week, “41”, of the year two thousand and six, “06”). This information is utterly important because the lifespan of an average tyre, whether used or not used at all, is five years internationally but the Standards Organisation of Nigeria and the Federal Road Safety Corps have recommended four years for Nigeria because of the extenuating circumstances tyres are subjected to on our roads. So, if a tyre is looking pristine and has never been used at all, but bears 0105, it is already a bad tyre!

The climate in which the tyre can be used is also usually specified on the tyre by its manufacturer. A tyre with the mark stating that it should only be used in a snowy environment/weather must not be used in our tropical clime. Indeed, in countries where such a tyre is illegally imported as used tyres to Nigeria, such a tyre is only used during the winter months and is changed in the summer.

Other vital indicators like the alphanumeric sign that states the nominal section width of the tyre, “165,” stroke the “aspect ratio,” i.e. the height of the tyre’s sidewall as a percentage of the nominal section width, “65,” with “R” radial construction, and, “14,” the diameter of the tyre’s inner rim in inches. All these come out as “165/65R14”

The information that is seldom understood and adhered to is the load capacity of a tyre, say “79” on the attached picture, and the tyre speed rating–i.e. the maximum speed for the tyre at full load–usually depicted as an alphabetical letter, “T” in our pictorial sample – M: 81mph or 130 km/h, – N: 87 mph or 140 km/h, – P: 93 mph or 150 km/h, – Q: 99 mph or 160 km/h, – R: 106 mph or 170 km/h, – S: 112 mph or 180 km/h, – T: 118 mph or 190 km/h, – U: 124 mph or 200 km/h, – H: 130 mph or 210 km/h, – V: 149 mph or 240 km/h, – Z: in excess of 149 mph or 240 km/h plus, – W: 168 mph or 270 km/h, – Y: 186 mph or 300 km/h), should strictly be respected by drivers.

The rains are here again and it is incumbent on this column to help you factor in these vital tips that will help you drive safely in wet condition

• First, slow down. It takes longer to stop or adjust in wet weather.

• Stay toward the middle lanes – water tends to pool in the outside lanes.

• Maintain proper following distance (third Second Rule). This needs to be increased in wet weather.

• Drive in the tracks of a car ahead of you.

• Don’t follow large trucks or buses too closely. The spray created by their large tyres reduces your vision. Take care when passing them as well; if you must pass, do so quickly and safely.

• Be more alert when driving in wet or slippery conditions. Watch out for brake lights in front of you.

• Avoid using your brakes; if possible, take your foot off the accelerator to slow down.

• Turn your headlights on even in a light rain, or in gloomy, foggy or overcast conditions. Not only do they help you see the road, but they’ll help other drivers see you. If your car has daytime running lights you still should put them on, so vehicles behind you can see you better.

• Before it starts to rain, replace old or brittle wipers.

• Avoid off-road driving: it’s hard to judge the actual depth of puddles and you can easily become stuck, even in a Sport Utility Vehicles.

• Never drive beyond the limits of visibility. At night rainy roads become especially treacherous. The glare of oncoming lights, amplified by the rain on your windscreen, can cause temporary loss of visibility while substantially increasing driver’s fatigue. In rainy conditions, pedestrians, livestock, and wildlife are extremely hard to spot and even harder to avoid.

• Never drive through moving water if you cannot see the ground through it; your car could be swept off the road.

• When driving through a puddle of uncertain depth, move slowly. If it is deeper than the bottom of your doors, turn around and find another route. Deep water can cause serious damage to a modern car’s electrical system.

• Avoid splashing pedestrians.

• If possible, stay off the road during heavy thunderstorms. Large flashes of lightning can temporarily blind and confuse drivers, and the accompanying high winds and heavy rain can create deadly driving conditions.

Slow down! This should be obvious but it also very important. People are so used to driving certain speeds on certain roads that sometimes they forget the need to slow down when inclement weather presents itself.

Culled from an online auto website, but edited/abbreviated for your ease of reading.