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Problems for specific Pontiac Grand Prix years:

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Most reported 1992 Pontiac Grand Prix problems

 

Verified for the Pontiac Grand Prix

Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.

4 Reports
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Verified for the Pontiac Grand Prix

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.

4 Reports
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