Chevrolet G Series Van (G20) Problem Report

Chevrolet G Series Van (G20) Highter Than Nornal Idle Due to Vacuum Leak

(8 reports)

An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.

same prob very high idle. spray injector cleaner around the base of the TB the Idle will slow down ,The base gasket is bad change gasket its under $4 -
Related Items:
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases,...
Engine won't start, anti-freeze in the oil pan no white smoke. how can I tell if it is just he...
where is the valve cover gasket located at
ENGINE IS STALLING AND BACKFIRING WHEN ACCELERATING UNDER A LOAD...IDLE IS GOOD...BUT SURGING..
Slow leak at times. Interested in repair shop in Biloxi/Gulport, Mississippi