For 1990-2009 cars

### Removal Procedure

Notice: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

1. Relieve coolant pressure.
2. Remove the air intake duct.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

3. Disconnect the negative battery cable.
4. Disconnect the electrical connector.
5. Using a deep well socket and extension, remove the sensor.

### Installation Procedure

1. Coat engine coolant temperature sensor threads with sealer P/N 9985253 or equivalent.

Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

2. Install the sensor in engine.

Tighten
Tighten the sensor to 23 N·m (17 lb. ft.).

3. Install the electrical connector.
4. Install the air intake duct.
5. Connect the negative battery cable.
6. Start engine.
7. Check for leaks.