ok, I'm gonna thread jack here: I just rebuilt the top end of a M20 and the idle races to 2k and stays there. Tried reving it to drop but it doesn't seem to go down much. I unplugged my AFM and the idle drops with the dme trying to compensate so the car runs a bit rough. She stabilizes after a min or so. The car stays running with it unplugged.
would anyone know what the possible cause of the high idle could be?
any help would be appreciated. thx.