Removal Procedure
- Disconnect the negative battery cable.
- Remove air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
- Relieve the coolant pressure.
- Drain the cooling system below the level of the sensor. Refer to Cooling System Draining and Filling in Engine Cooling.
- Remove the upper radiator hose from the intake manifold by loosening the radiator hose clamp.
- Disconnect the ECT sensor harness connector.
- Remove the ECT sensor.
Notice: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
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.
Caution: To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.
Installation Procedure
- Coat the ECT threads (only) with sealer P/N 9985253 or equivalent.
- Install the ECT sensor.
- Connect the ECT sensor harness connector.
- Connect the upper radiator hose.
- Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
- Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
- Connect the negative battery cable.
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.
Tighten
Tighten the sensor to 20 N·m (15 lb ft).
