my audi 90 2.3 runs bad at idle enginespeed, while driving no problem only idle speed always varies the rpm. the air mass meter has had a tick and is a bit torn from the black box. the boegies color black and the car smokes black.
Plug the idle Switch out, and take a Ohm Meter. the Idle switch shoult have a resistance 0-5 Ohms when the Throttle is closed. If opened the Resistance should be infinitely...
Sommer: 1992er Audi 100 typ C4 mit 2,5L Motor - Der Einzigartige Winter: 1991er Audi 100 typ C4 mit AAR Motor Frau: 1993er Audi 100 Avant mit 2,5er AAR Motor und MPI