For 1990-2009 cars

### Removal Procedure

1. Drain the cooling system. Refer to Cooling System Draining and Filling.
2. Slide the electrical connector heat shield up the wiring harness.
3. Disconnect the engine wiring harness electrical connector (8) from the engine coolant temperature (ECT) sensor (9).
4. Remove the ECT sensor.

### Installation Procedure

Caution: Refer to Fastener Caution in the Preface section.

1. Install the ECT sensor.

Tighten
Tighten the sensor to 22 N·m (16 lb ft).

2. Connect the engine wiring harness electrical connector (8) to the ECT sensor (9).
3. Slide the electrical connector heat shield down over the connector.
4. Fill the cooling system. Refer to Cooling System Draining and Filling.