Removal Procedure
- Turn the ignition OFF.
- Remove the air induction tubing from the throttle body to the air cleaner.
- Disconnect the engine coolant temperature (ECT) sensor harness connector.
- Remove the ECT sensor using a deep-well socket.
Important: The engine coolant must be drained below the level of the engine coolant temperature (ECT) sensor.
Important: The connector must be removed by squeezing the slides. Apply pressure to the sides gently with pliers. Do not pull on the wires.
Installation Procedure
- Apply thread sealant Saturn P/N 21485277 (LOCTITE 242® Threadlocker or equivalent) to the sensor threads.
- Install the ECT sensor.
- Connect the ECT sensor harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.
- Install the air induction tubing from the throttle body to the air cleaner.
- Fill the engine coolant to the proper level.
- Check for leaks.
Important: Tap out the sensor mounting hole in the engine head to remove the thread sealant residue. Clean any sealant residue from the old sensor and apply RTV sealant to the threads if the old sensor is going to be reused.
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.
Tighten
Tighten the coolant temperature sensor to 8 N·m (71 lb in).
