Are you having problems with your Holden Commodore? Let our team of motoring experts keep you up to date with all of the latest Holden Commodore issues & faults. We have gathered all of the most frequently asked questions and problems relating to the Holden Commodore in one spot to help you decide if it's a smart buy.
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You're right to be concerned as there are lots of reports of problems with the Gen III engine. You're also right they can use oil at an alarming rate, and they can have a piston rattle. Holden has rebuilt lots of them under warranty, so I would ask the seller about any work that has been done on the engine. Ask for proof positive that work has been done if they say it has. Ask also for any records of oil consumption they might have kept. It's impossible to tell if an engine is using oil simply by looking at it, so you have to try to get as much info out of the owner as possible, and hope they're telling the truth. Check the service book for anything that might say it's been in for extra servicing, or had additional oil added. As for the noise, listen carefully for a light metallic rattle as you blip the throttle. There's no need to rev it hard, simply blip the throttle and you should be able to hear it if it does rattle. Keep it in the back of your mind that there are plenty of cars out there, so if you have any doubts about the car you're considering, walk away.
The change took place with the VX in 2000. The increase in power is predominantly due to a more powerful electronic control module that could process more data more quickly, and a new smoother intake manifold that improved the V6's gas flow and volumetric efficiency.
There's virtually no similarity between the Bathurst racers and the road cars you and I buy from Ford or Holden, apart from a vaguely similar appearance. The engines are purpose-built 5.0-litre V8s. Neither Ford nor Holden have a production 5.0-litre V8 on sale. The gearboxes are purpose-built for racing and the suspensions are special, as are the brakes, wheels and tyres. The bodies may look like the production equivalent, but they're specially built, incorporating roll cages and other reinforcements. And get this: the Commodores now run a Falcon-type wishbone front suspension instead of the MacPherson strut the production cars run. The Commodore racers have long-run Ford nine-inch diffs as well.
We contacted Holden for their response, which is: ``While it is impossible to diagnose a car without sighting it, rough running on start-up and/or hard starting can be caused by many things, including leaking injectors, carbon build-up on the valves, etc. Injectors wear over time and are also subject to deposits from the fuel. Given the age of the vehicle, injector leakage is a possibility. This is not a generic V6 problem. If the injectors are in fact leaking, this is a maintenance item. Injector leakage can be tested by carrying out a pressure test and confirming pressure drop.'' I think this is good advice. Take the car to a fuel-injection specialist and have them check the injectors, and think about having them cleaned.
Your Falcon would have tested about 13 litres/ 100km when new. For comparison purposes, the Commodore V6 would return about 11.5 litres/100km, the 3.5-litre V6 Magna about 10.5 and the Camry closer to 13. Clearly, on that basis the Magna is the car for you.
The Commodore will need an upper cylinder lubricant added to the fuel if you run it on ULP. The Toyota should happily run on ULP without any additional lubrication.
On the surface it sounds a reasonable deal. You would expect a VT to have done 90-110,000km on average, so the mileage is below average. The trade is paying $11,000-$13,500 for a VT S at the moment, and retailing them at $15,000-$18,000. Check the car thoroughly, and make sure the odometer is correct.
I'm not aware of any Commodore clubs. There is a club for fans of Holdens from 1960 to 1980 which would cover your Commodore. Contact them on 0412 914 345. Alternatively, contact the Association of Motoring Clubs on 9555 0133.
It's certainly worth upgrading your brakes to the later VT set-up. You will improve your braking performance. As far as the shocks go, it's worth fitting new ones. Shocks are a most important safety item in your suspension, and there could be ride benefits as well. I would suggest either Koni or Bilstein shocks, though they are more expensive than the Monroes.