Coolant Temperature Sensor/Switch (For Computer): Service and Repair
Engine Coolant Temperature (ECT) Sensor ReplacementREMOVAL PROCEDURE
1. Raise the vehicle. Refer to Vehicle Lifting in Service Precautions.
2. Drain the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
3. Lower the vehicle.
4. Disconnect the electrical connector from the ECT sensor.
5. Remove the #1 spark plug wire from the spark plug.
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
6. Remove the ECT sensor.
INSTALLATION PROCEDURE
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. Coat the Engine Coolant Temperature (ECT) sensor threads with sealer P/N 12346004 or the equivalent.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the ECT sensor.
Tighten
Tighten the ECT sensor to 23 N.m (17 lb ft).
3. Install the #1 spark plug wire onto the spark plug.
4. Connect the ECT sensor electrical connector.
5. Refill the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
6. Start the engine and check for leaks.
7. Perform the idle learn procedure. Refer to PCM Idle Learn Procedure.