Coolant Temperature Sensor/Switch (For Computer): Service and Repair

SENSOR-ENGINE COOLANT TEMPERATURE

REMOVAL
5.7L ENGINE





The Engine Coolant Temperature (ECT) sensor on the 5.7L engine is located under the air conditioning compressor. It is installed into a water jacket at the front of the cylinder block.





WARNING: HOT, PRESSURIZED COOLANT CAN CAUSE INJURY BY SCALDING. COOLING SYSTEM MUST BE PARTIALLY DRAINED BEFORE REMOVING THE COOLANT TEMPERATURE SENSOR.

1. Partially drain the cooling system.
2. Remove accessory drive belt.
3. Carefully unbolt air conditioning compressor from front of engine. Do not disconnect any A/C hoses from compressor. Temporarily support compressor to gain access to ECT sensor.
4. Disconnect electrical connector from sensor.
5. Remove sensor from cylinder block.

INSTALLATION





1. Apply thread sealant to sensor threads.
2. Install sensor into engine.
3. Tighten sensor to 11 Nm (8 ft. lbs.) torque.
4. Connect electrical connector to sensor.
5. Carefully bolt air conditioning compressor onto the front of engine.
6. Install accessory drive belt.
7. Replace any lost engine coolant.