For 1990-2009 cars

### Removal Procedure

1. Partially drain the cooling system. Refer to Cooling System Draining and Filling .
2. Remove the heat shield from the around the electrical connector, if necessary.
3. Disconnect the engine wiring harness electrical connector (3) from the engine coolant temperature (ECT) sensor.
4. Remove the ECT.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

1. Install the ECT.

Tighten
Tighten the sensor to 20 N·m (15 lb ft).

2. Connect the engine wiring harness electrical connector (3) to the ECT sensor.
3. Install the heat shield around the electrical connector, if necessary.
4. Fill the cooling system as needed. Refer to Cooling System Draining and Filling .