Radiator Cooling Fan Temperature Sensor / Switch: Service and Repair

ENGINE COOLANT TEMPERATURE SENSOR - 5.9L Diesel

REMOVAL





The Engine Coolant Temperature (ECT) sensor on the 5.9L diesel engine is located near the thermostat housing.

WARNING: HOT, PRESSURIZED COOLANT CAN CAUSE INJURY BY SCALDING. COOLING SYSTEM MUST BE PARTIALLY DRAINED BEFORE REMOVING THE COOLANT TEMPERATURE SENSOR.

1. Partially drain the cooling system.
2. Disconnect the electrical connector from the sensor.
3. Remove the sensor from the cylinder head.

INSTALLATION
1. Apply thread sealant to sensor threads.
2. Install sensor to engine.
3. Tighten sensor to 18 Nm (13 ft. lbs.) torque.
4. Connect electrical connector to sensor.
5. Replace any lost engine coolant.