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1992 Pontiac Grand Prix Problems

RepairPal has identified the most common problems with the 1992 Pontiac Grand Prix based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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21
Known Problems

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.

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

Our technicians highly recommend that the engine coolant be replaced every 30,000 miles.
The timing belt may fail prematurely. Our technicians tell us that the belt tensioner and idler pulleys should be replaced when the timing belt is replaced.
Air flow from the dash vents may be incorrect due to a damaged engine vacuum hose near the battery tray.
One or more of the rear suspension links may become bent causing a severe rubbing noise.