I recently noticed that when my engine is cold, the idle on my Audi A2 seems very rough and the whole car vibrates. What could be causing this issue and how can I fix it?
ReplyIt is possible that your engine's spark plugs are worn out, causing misfires at idle when cold. I recommend checking and replacing them if necessary.
Another potential cause could be a dirty or faulty idle air control valve. I suggest cleaning or replacing it to improve idle performance.
Make sure your air filter is clean and unclogged; a dirty or clogged filter can cause rough idle and engine vibration.
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