MAF as said, or does it have a dump to atsmosphere dump valve? probably open on idle.
Never had a problem cleaning stepper motor.. just make a rough note of location of plunger, clean and replace in similar place.. ecu relocates it (original) if on an after market ecu like apexi it wont know the position and will just wind it out and out if you reset it at a different location to it was (further out).
The do get gunged up.
Simon
|