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Coolant Temperature Sensor
- Drain cooling system. Remove coolant temperature sensor from lower corner of radiator. Place coolant temperature sensor in water up to mounting threads.
- Heat water to 185°F (85°C) and check continuity between sensor terminals. Ensure continuity exists. Reduce water temperature to less than 172°F (78°C). Check continuity. Continuity should not exist. Replace sensor if it does not test as specified.