i have a 1993 chevy with the 4.3 v6 and it starts and runs fine until it warms up then after driving it starts idling very high and sometimes when i stop at a stoplight it will die

Asked by Mar 09, 2017 at 11:13 AM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

1 Answer

73,655

Check for vacuum leaks. Take some carburetor cleaner with the engine running and spray along the intake manifold gasket, and the throttle body base gasket. You would notice a change in the rpms if there is a vacuum leak. Snug up the intake manifold bolts and replace the throttle body base gasket.

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