Problem overview
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.
20 people reported this problem
4 commentsChevrolet Lumina vehicles with this problem
9 model years affected
Average mileage: 107,666 miles
(56,000 - 176,000)
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