Hello, I hope you can help me. My Audi 80 B4 2.0l runs about 30 sec. too high after the cold start, after that it falls on the normal speed (900-1000), but when it is warm then the speed drops on and it goes out shortly before, which is quite annoying for a while. However, he doesn’t always do this, sometimes it goes well all day, but mostly it spins around when it is warm. Was today in the workshop, which thought it would be the single-pointing system, wanted the car dabeh old, but didn’t go because I need it. Do you know any more possibility? Thank you in advance.