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Holden Astra 2009: What is causing it to sound rough?

Asked by Errol Mitchell

Every few weeks my 2009 Astra sounds like a diesel, but it never does it when I take it to my mechanic and I look a fool. What could be wrong?

Answered by CarsGuide

14 Aug 2015 Carsguide.com.au

It's always hard when you know there's a problem, but it's never present when there's a mechanic with you. It's hard to diagnose when you can't hear it for yourself, so keep notes on when it occurs and anything you observe that might give the mechanic a clue. Things like, does it do it on cold starts, under acceleration, slowing down, at idle. Even better, record it on your smart phone so you replay it for the mechanic the next time you take it in.

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