Erratic temperature gauge and warning light: Pontiac Grand Prix Electrical System

Problem overview

The engine temperature sensor wire for the engine temperature gauge, or warning light, may touch the rear exhaust manifold causing a short to ground causing erratic operation of the temperature gauge or warning light.

7 people reported this problem

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Pontiac Grand Prix vehicles with this problem

4 model years affected

1993 Pontiac Grand Prix

1992 Pontiac Grand Prix

1991 Pontiac Grand Prix

1990 Pontiac Grand Prix

1993 Pontiac Grand Prix

1992 Pontiac Grand Prix

1991 Pontiac Grand Prix

1990 Pontiac Grand Prix

Average mileage: 100,000 miles

(100,000 - 100,000)

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Erratic temperature gauge and warning light on Pontiac Grand Prix

Problem overview

Pontiac Grand Prix vehicles with this problem

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