Car Service Statistics, which Australian cars were most serviced?

Car Service Statistics

Car Service statistics by a leading technical vehicle data provider Autodata

Show Toyota Hilux was the most common vehicle taken into workshops throughout Australasia during 2016, closely followed by the Nissan Navara D40, with Holden Commodore VE in third place.

But don’t take this out of context. Without measuring this finding against the numbers of each vehicle on the roads, no conclusions about vehicle performance can be reliably reached.

The Commodore was the only saloon car to make it into the top five most serviced vehicles in 2016.

Leading aftermarket data provider Autodata tracks the service numbers each year and lists the top ten most serviced vehicles:

Hilux top leading car service

Autodata’s list of the top 10 most serviced vehicles in 2016

 

  • 1. Toyota Hilux (2005-2015)
  • 2. Nissan Navara D40 (2005-2015)
  • 3. Holden Commodore VE (2006-2010)
  • 4. Mitsubishi Triton MN (2009-2015)
  • 5. Ford Ranger PJ/PK (2007-2011)
  • 6. Toyota Landcruiser 100 Series (1998-2007)
  • 7. Holden Commodore VZ (2004-2006)
  • 8. Holden Astra TS (1998-2004)
  • 9. Holden Captiva CG (2006-2011)
  • 10. Nissan Navara D22 (1997-2014)

Highlighting the relevance of conCar Servicetext in statistics, Autodata notes thaToyota first began production of their popular utes in 1968. Today, there are more than 880,000 Toyota Hilux utes on Australian and New Zealand roads.

 

Nissan V35 Skyline P0350 secondary ignition issue

Nissan V35 Skyline P0350.

A customer of mine has a Nissan V35 Skyline with the 3.5-litre GQ35 V6 engine

He came in with the malfunction indicator lamp (MIL) on and after a thorough inspection of the secondary ignition we found one of the ignition coils was failing under engine load. A misfire was also noticed on a road test and the faulty coil was replaced.  Nissan V35 Skyline P0350 code was set.

The customer asked that the other five coils not be changed because they are reasonably easy to get to and to replace. The car was good for 12 months.

But then the car came back with the same dreaded P0350 fault code (ignition-coil primary/secondary-circuit malfunction). Unlike last time, there was no noticeable misfire when driving and we could not fault the coils on our lab scope. Even the spark looked good and seemed healthy.

Now I could have simply thrown a new set of coils in the car and the problem would have been fixed. However, this was not going to teach me why they all looked good yet we still had the code. Besides, we could have a feedback problem causing the engine control unit (ECU) to log this code or we could even have an ECU issue. I had to be sure why the car was logging the code and, even though I suspected a faulty coil, I was not about to just throw a set of coils at it without good reason.

Sent all of the coils to Rod Maher.

I sent all of the coils to Rod Maher in Grafton, who used his coil bench-tester to stress them out. He found two were leaking in the secondary-coil spark-plug boot. You see, Rod not only stresses out the coils but runs a incandescent test lamp that is earthed to ground – waving the pointed end over the coil boot will bring out any weaknesses the boot may have.

We replaced those two coils. I also checked them on a running engine with a spark tester set to about 35 kilovolts (kV) – using my test lamp the way Rod does – and one of the two was leaking. The other, I found out later, started to break down at 40kV when passing the pointed test lamp past the coil boot.

We cleared the code, road-tested the vehicle and retested for codes. All seemed good. The customer paid for the job and even said how much better the car seemed to drive.

But then, two days later, there was another phone call. The engine light had come back on.

Sure enough, the MIL light was on and we had our dreaded P0350 code again. This time the code would clear but reset as soon as the engine was running. There was no misfiring but it was clear whatever was setting the code was now constant and should make my job easy.

After checking each coil’s primary current and not seeing any evidence there, I retested each coil using the spark kV tester set to 40kV. Every coil passed the running test using a test lamp and did not show any leakage.

The spark plugs were only a year old but we had to rule them out, so a new set went in. There was no change.

Nissan V35 Skyline P0350 code – possible causes

• Faulty ignition-coil primary.

• Faulty secondary ignition-coil primary.

• Open secondary harness or shorted ignition-coil primary.

• Poor electrical connection of secondary circuit.

• Faulty engine-control unit (ECU).

It seemed the only thing left was to check the ECU coil-feedback signal that goes to and from the coil. If the signal was there and all was good we would then have to check the ECU powers and grounds. If they were OK then the problem would have to be the ECU.

Pico scope pattern

I hooked my scope up and checked the three right-hand-bank coils first. All voltage coil feedbacks looked the same and even voltage was going to all coils. When I repeated the test on the left bank, however, one of the feedback voltages was noticeably higher than the other five coils that had been checked.

There were two possible causes for this – it could have been a coil or a voltage leakage in the ECU. So I got out one of the old coils that we’d replaced earlier, swapped it and rechecked the voltage. This time the feedback voltage was normal. The code was cleared and did not return.

 

 

Finally, I had the confidence to replace the rest of the coils. Should I have replaced them all at the beginning? Of course I should have. That means I have to ask myself another question – do I give my customers the choice or do I take that away from them by telling them all of their coils will need replacing. In the future I think I’ll be strongly recommending all coils get replaced.

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