I recently noticed that my Audi A3 is vibrating when stopped at a red light, and the engine seems to be struggling to maintain a steady idle. What could be causing this issue and is there a way to fix it?
ReplyThis could be due to a faulty PCV valve. It's responsible for regulating the air flow to the engine and a malfunctioning valve can cause rough idle. I recommend having it checked and replaced by a certified mechanic.
Another potential cause could be a dirty air filter. A clogged air filter restricts air flow to the engine, resulting in rough idle. Try replacing the air filter and see if that improves the engine performance. If the issue persists, it's best to have a professional diagnose and fix the problem.
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