Rough Running Engine Due to Vacuum Leak on Pontiac Grand Prix

The engine vacuum hose to the MAP sensor may crack resulting in a vacuum leak causing the engine to run rough and/or stall.

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Average mileage: (–)
Engines affected: 2.3L 4 Cylinder, 3.1L V6
2 model years affected: 1990, 1991
3 people reported this problem
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