Posted this message in the Golf/JettaIII forum. Someone suggested I post here.
1998 Jetta GLX VR6, 87,000 miles.
Symptom: Car occasionally won't start 1-2 hours after driving. Engine not overheating, but obviously warm. Car will always start when warm if started within 5 minutes after shutting down (such as going into a quick mart and coming back out). Car will always start after sitting for atleast 5 hours and has cooled off. Problem only happens about 1-3 hours after being driven with engine still warm, but doesn't always occur. Maybe twice a week. About half the time, it throws code P0322 Distr/Ign Engine Speed Input Circuit No Signal.
Weird thing is I CAN ALWAYS get the car started by spraying starting fluid in the airbox. What's up with that? Does a weak or absent CKP sensor cause a weak spark or something that the starting fluid helps the engine overcome?
Already replaced the cam position sensor and have ordered a crank position sensor ($103 - Bosch replacment via friend at local parts store).
Is there any other sensor that controls the engine speed input to the distributor besides the cam and crank position sensors? Can't think of any.
Has anyone else had this problem and fixed it by replacing these sensors?
Other than the sporadic hot start issue, the car runs completely normal. Even just before and after the problem occurs.
Modified by Schwantz at 3:43 PM 8-19-2004