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(1992 GMC Vandura 2500)
in Cedar Rapids, IA on November 30, 2009
when engine warms up the idle gos up an down and if your setting at a stop light it will die sometimes
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Popular Answer
on 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.
on December 27, 2010
belt diagram
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