Diesel Data: Automotive Repair

Engine - Coolant Temperature Sensor/Switch: Service and Repair

ENGINE COOLANT TEMPERATURE SENSOR
REMOVAL





1. Disconnect the negative battery cable.
2. Partially drain the cooling system.
3. Remove the engine cover (1). Grasp both corners of the engine cover, and pull up firmly.





4. Disconnect the engine coolant temperature sensor harness connector (1).





5. Pull up on the engine coolant temperature sensor retaining clip (1) and slide the engine coolant temperature sensor out of the housing.
6. Remove the engine coolant temperature sensor from the engine.

INSTALLATION





1. Clean any debris or corrosion from the engine coolant temperature sensor mounting surface.
2. Use a small amount of petroleum jelly to lubricate the sensor seal.
3. Install the engine coolant temperature sensor and retaining clip (1).





4. Connect the engine coolant temperature sensor harness connector (1).





5. Install the engine cover (1). Align the engine cover retaining clips to the rubber mounts, and push down firmly to connect engine cover to rubber mounts.

Note: To ease the installation of the engine cover, apply a small amount of lubricant to the engine cover rubber mounts.

6. Refill the cooling system.
7. Connect the negative battery cable.