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My Holden SS V8 commodore is chugging

Asked by Alison

Hi guys, I have an issue with my SS V8 Commodore, it is chugging. The engine light is on and now the ABS is malfunctioning. I have had the spark plugs, the coil replaced, a service and it has not fixed the issue. My heating and a/c doesn't work. It blows hot air through the windscreen vent only. Please help.

Answered by CarsGuide

15 Feb 2023 David Morley

The first thing to do is make sure your battery is earthed properly and all the relevant electrical contacts are tight and clean. Low voltage or a poor connection can easily cause the problems you're seeing, especially if they've all occurred more or less at the same time.

The next thing is to have the vehicle electronically scanned. That will tell you what faults the on-board computer has spotted, and you can then tackle them logically instead of replacing parts that don't fix the actual problem. The rough running could be anything from a dud oxygen sensor to a fuel-injection problem and lots in between.

I would suspect the heating and air-conditioning problems are separate to the engine's poor running, but anything's possible when a car's electronics start playing up.

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