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Erratic temperature gauge and warning light on Buick Regal

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: (–)
Electrical & Lights affected: 3.1L V6
4 model years affected: 1990, 1991, 1992, 1993
4 people reported this problem