engine on 1992 GMC Vandura 2500

when engine warms up the idle gos up an down and if your setting at a stop light it will die sometimes

Asked by for the 1992 GMC Vandura 2500
2 answers
Symptom: High idle. IAC counts are at 0.



System: Emissions/PCM/Fuel



Codes: N/A



Problem: TBI (Throttle Body Injector) base gasket is leaking.
belt diagram