Hi!

I wanted to ask, if anyone of you had a problem like this:

It's an MKIII XR3i with K-Jetronic. If I get to a traffic jam, after a few minutes the idle speed slowly gets higher and higher. Yesterday after 15 minutes it reached 4000rpm I had no better idea at the moment, I screwed the idling screw to its end in, then is decreased to 2500.

If I get out of the jam, and drive about 200-300 meters normally, then it gets back to its normal value.

Coolant temp is OK, what else can warm up, so that is causes such things?

Thanks for your help in advance!