Why does my Audi 80's engine shake while idling?

I recently noticed that my Audi 80's engine starts to shake and vibrate while idling. What may be the cause of this issue and how can I fix it?

There are a few possible reasons for this issue. Firstly, it could be due to a misfiring spark plug, which can be easily fixed by replacing the spark plug. Another possibility is a dirty or clogged air filter, which can cause the engine to struggle at idle speeds. Try cleaning or replacing the air filter to see if it helps.

Is your check engine light on? If so, it may be a sign of a more serious problem with the engine. It could be a malfunction in the fuel or ignition system, or even a faulty sensor. I recommend bringing your car to a trusted mechanic for a diagnosis and proper fix.

I had a similar issue with my Audi 80 and it turned out to be a problem with the idle control valve. Have a mechanic check this out as it may need to be cleaned or replaced.