Important: Use care when you handle the engine coolant temperature (ECT) sensor. Damage to the engine coolant temperature sensor will affect the proper operation of the fuel injection system.

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Drain the radiator coolant. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.
3. Disconnect the ECT sensor electrical connector.



4. Use a 19 mm deep well socket and an extension in order to remove the ECT sensor.

Important: Use care when you handle the ECT sensor. Damage to the ECT sensor will affect the proper operation of the fuel injection system.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Hand start the ECT Sensor into the engine.

Tighten
Tighten the ECT Sensor to 30 N·m (22 lb ft).

2. Connect the ECT sensor electrical connector.
3. Refill the radiator with coolant.
4. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
5. Start the engine, and check the engine for leaks.
6. Check the coolant level.