What causes the engine of my Audi 80 to stall?

I have noticed that my Audi 80 has been stalling frequently, especially when idling at stop lights. What could be causing this issue and how can I fix it?

One common cause of engine stalling in Audi 80s is a dirty or faulty idle air control valve. This valve controls the amount of air that enters the engine while idling. Try cleaning the valve with a non-abrasive cleaner and see if that improves the stalling issue.

Another possible cause could be a faulty crankshaft position sensor. This sensor is responsible for monitoring the position and speed of the crankshaft. If it malfunctions, it can cause the engine to stall. Consider replacing the sensor if cleaning the idle air control valve does not solve the issue.

I had a similar issue with my Audi 80 and it turned out to be a clogged fuel filter. A dirty fuel filter can restrict fuel flow to the engine, causing it to stall. Try replacing your fuel filter and see if that helps.