Cavalier, Sunfire 2001-2005

Removal & Installation

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2.2L & 2.4L Engines



  1. Turn OFF the ignition.
  2.  
  3. Drain the coolant system to below the ECT sensor.
  4.  
  5. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
  6.  
  7. Carefully remove the ECT sensor.
  8.  
  9. Installation is the reverse of the removal procedure. Coat sensor threads with thread lock sealant and tighten sensor to 89 inch lbs. (10 Nm).
  10.  

2.2L Engine




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

  1. Turn OFF the ignition.
  2.  
  3. Drain the coolant system.
  4.  
  5. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.
  6.  
  7. Carefully back out the ECT sensor.

    Click image to see an enlarged view

    Fig. Coolant temperature sensor for the 2.2L Engine

  8.  

To install:

  1. Coat the threads only with sealer P/N 9985253 or an equivalent.
    NOTE
    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.

  2.  
  3. Install the ECT sensor and tighten the ECT sensor to 18.5 ft. lbs. (25 Nm).
  4.  
  5. Connect the ECT sensor electrical connector.
  6.  
  7. Refill the engine coolant system.
  8.  

2.4L Engine




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

  1. Turn OFF the ignition switch.
  2.  
  3. Drain the coolant system.
  4.  
  5. Disconnect the ECT sensor electrical connector.
  6.  
  7. Carefully remove the ECT sensor.

    Click image to see an enlarged view

    Fig. Coolant temperature sensor for the 2.4L Engine

  8.  

To install:

  1. Coat only the threads of the ECT sensor with thread sealer.
    NOTE
    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.

  2.  
  3. Install the ECT sensor in the engine and tighten the ECT sensor to 17 lb inches (23 Nm).
  4.  
  5. Connect the ECT sensor electrical connector.
  6.  
  7. Refill the engine coolant system.
  8.  

 
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