Why does my Audi 80's engine keep stalling while idling?

I recently bought a used Audi 80 and noticed that the engine often stalls when idling for more than a few minutes. The check engine light does not come on. What could be causing this issue?

It sounds like your idle air control valve may be dirty or malfunctioning. This valve controls the amount of air that enters the engine while idling. I would recommend having it cleaned or replaced to see if that resolves the issue.

Another potential cause could be a dirty or clogged fuel filter. This can restrict the flow of fuel to the engine and cause stalling. I would suggest having the fuel filter checked and replaced if necessary.

Have you checked the spark plugs and wires? Worn or faulty spark plugs can also cause stalling while idling. I would recommend having them inspected and replaced if needed.