Chevrolet Lumina Problem Report

Chevrolet Lumina Rough and/or High Idle Due to Engine Vacuum Leak

(13 reports)

The upper intake manifold gasket and/or a PCV vacuum lines/hoses can develop vacuum leaks with age. This type of leak can result in a higher that normal or rough idle.

Problem developed after replacing temperature sensor. Found vacuum leak on PCV line where it "T"s into throttle body/Intake. Replaced Vacuum line. -
Current problem. -
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