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On a 1991 Pontiac Grand Prix, the coolant temperature sensor is typically located near the thermostat housing on the engine block. It is usually found on the intake manifold or cylinder head, depending on the specific engine configuration. This sensor monitors the engine's coolant temperature and sends data to the engine control unit for optimal performance. If you're having trouble locating it, consulting a repair manual specific to your model can provide further guidance.

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2mo ago

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