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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YOUR mechanic has covered the most common causes of a miss. The next things to check are vacuum leaks and fuel pressure. Start with the vacuum leaks, and look for leaking vacuum hoses or a leaking intake manifold. Next check the fuel pressure, which might show up a faulty fuel pressure regulator.
I WAS the development engineer on the 4.2-litre V8 back then, so I have a soft spot for the engine and I'm happy you have had a good run out of it. The 4.2-litre engine was a sweet-running, smooth little V8 once the four-barrel carburettor was fitted. The easiest and least expensive course, and the one I would recommend, is to rebuild the motor and adapt it to run on unleaded.
IT SEEMS the most likely source of the leak is from the rear quarter windows. The best fix is to remove the windows and reseal.
THERE'S no need to warm up your car before driving off. The presence of a cream/brown sludge in the oil suggests there's water present, and the rough shifts may mean there's some water in the transmission oil. Check the transmission oil, it should be red and nice and clear. If it's not, it would be wise to have an auto trans expert look at it. Your problem could be in the radiator, which incorporates an oil cooler for the auto transmission. A failure there could result in water getting into the fluid and affecting the function of the transmission.
THE flat spot sounds like fuel vaporisation. Fuel can vaporise in the fuel rail because of the heat generated while sitting idle, and it can cause a slight misfire when it's time to go. Get the fuel pump checked to see if it's delivering its full flow of fuel. Also check the fuel-pressure regulator to see if it's maintaining the correct fuel pressure.
IT'S UNLIKELY to be coming in through the tail lights. First check the condition of the boot lid seal, the most likely cause. If that's OK look around the boot for any sign the car has been in a crash. It could be that the boot lid is out of alignment and not seating properly on the seal. If all that appears OK, lift the boot mat, remove the spare, and thoroughly check the whole boot area for telltale water stains.
THE Commodore will tow up to 2100kg with the approved tow hitch, but it comes down to the weight of the caravan and what the regulations will allow you to tow. Check with Vicroads for the maximum for the VT.
IF THE noise is a light rattly one heard only when the engine is cold, then it's more than likely to be the hydraulic lifters, or tappets, as you've been told. You don't say if your car is a VL or VN, which was released in August 1988, but I'll assume it's a VL. The reason for the assumption is that the Nissan engine in the VL suffers camshaft wear and lifter rattle. The way to fix it is to replace the camshaft and lifters.
BEFORE the advent of bigger front-wheel-drive family cars from Toyota and Mitsubishi in the '90s, we mostly used rear-wheel-drive cars for towing. They are still preferred for towing because the weight over the rear wheels is an advantage. The recent popularity of all-wheel-drive cars, including 4WDs, has further clouded the towing issue. If I were to go on the round-Australia dream drive, I would take an all-wheel-drive. Not for the towing, but to get to those out-of-the-way tourist destinations that I couldn't get to with a two-wheel-drive car.