Intake Manifold and PCV Vacuum Lines/Hoses Can Leak Due to Age: Pontiac Grand Prix Engine & Powertrain

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.

17 people reported this problem

1 comment

Schedule Repair

Pontiac Grand Prix vehicles with this problem

9 model years affected

2003 Pontiac Grand Prix

2000 Pontiac Grand Prix

1996 Pontiac Grand Prix

1995 Pontiac Grand Prix

1994 Pontiac Grand Prix

1993 Pontiac Grand Prix

1992 Pontiac Grand Prix

1991 Pontiac Grand Prix

1990 Pontiac Grand Prix

2003 Pontiac Grand Prix

2000 Pontiac Grand Prix

1996 Pontiac Grand Prix

1995 Pontiac Grand Prix

1994 Pontiac Grand Prix

1993 Pontiac Grand Prix

1992 Pontiac Grand Prix

1991 Pontiac Grand Prix

Average mileage: 146,000 miles

(116,000 - 176,000)

Repairs related to this problem

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Intake Manifold and PCV Vacuum Lines/Hoses Can Leak Due to Age on Pontiac Grand Prix