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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Reliability and resale should be the key factors in your decision, given you're doing about 30,000km a year. That's considerably more than the average, and in three years you'd be clocking up close to 100,000km. With that in mind I suggest you go for a Japanese brand with a reputation for quality and reliability. That way you are more likely to have a trouble-free run and have a car that will be highly valued on the used-car market when you come to sell it. The Lanos and Accent are both built in Korea by companies whose credo was cheap, cheap, cheap. While the reliability of their products wasn't necessarily poor, their cars weren't built as well as their more expensive Japanese-made rivals. The Korean makes don't hold their values as well as the cars from Toyota, Mazda, Honda and Nissan. I'd consider a Nissan Pulsar, a Mazda 121, Honda Civic or Toyota Corolla, all of which are good, robust cars with good resale potential.
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.
The supercharged version of the ECOTEC V6 is an option in the Commodore S and produces 171kW compared with 147kW produced by the normally aspirated V6, which is the standard engine. One thing you might want to consider is that the supercharged engine is only available with the four-speed auto transmission where there is a choice of manual or auto with the standard V6. The auto tends to dull the driving experience of the supercharged V6, but it is still a lively engine and fun to drive. The VT Series II saw the introduction of the 5.7-litre Gen III Chev V8 which is a relatively high-revving V8 compared with the old Holden V8 it replaced, but it is also a fun engine to drive and comes with a choice of auto or six-speed manual. There is no significant difference in servicing or parts costs with either the S or the SS, but we are aware that some Gen III V8s have had problems with piston rattle and high oil consumption and you should carefully check for any sign of these problems with any car you are considering buying.
Early Commodores with independent rear suspension suffered from high tyre wear because of geometry changes they went through as they worked. Anything that made the rear lower, such as putting the weight of a trailer on it, made it worse. So the advice you received was correct and you would have to replace tyres more often on a Commodore built before the VX Series II. The VX Series II saw the independent rear suspension improved with additional links to particularly control the changes in toe-in as the wheels moved up and down. This meant Holden could change the suspension settings which reaped benefits in tyre wear, as well as worthwhile improvement in ride, handling and stability. If you are looking to buy, then I would recommend the VX Series II, but if you have a car you want to improve, then take it to a suspension specialist who will be able to suggest ways to solve the problem.
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.
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.
Since you have covered the basics of fitting new spark plugs and leads, I'd look deeper. It sounds as if you might have a burnt valve so I'd suggest you get a mechanic to do a compression test on the engine and look for a cylinder that is not holding compression.
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.