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Engine Coolant Temperature Sensor

Disconnect Engine Coolant Temperature (ECT) sensor connector. Using an ohmmeter, measure resistance between ECT sensor terminals. See ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE table. If resistance is not as specified, replace sensor.

ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)	Ohms
32 (0)	7300
68 (20)	2800
176 (80)	300
212 (100)	150