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

by in Cedar Rapids, IA on November 30, 2009
2 answers
ANSWER by , November 30, 2009
Symptom: High idle. IAC counts are at 0. System: Emissions/PCM/Fuel Codes: N/A Problem: TBI (Throttle Body Injector) base gasket is leaking.
ANSWER by , December 27, 2010
belt diagram