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Crankshaft Position Sensor <--> [Crankshaft Position Sensor] > < Engine Coolant Temperature (ECT) Sensor <--> [Coolant Temperature Sensor/Switch (For Computer)]|Specifications|Page 2529

Wrangler L6-4.0L VIN S (2000)

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Engine Coolant Temperature (ECT) Sensor: Service and Repair

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

Engine Coolant Temperature Sensor - Typical

The coolant temperature sensor is installed in the thermostat housing.

REMOVAL

1. Partially drain cooling system until coolant level is below cylinder head. Observe the WARNINGS in Cooling.
2. Disconnect coolant temperature sensor wire connector.
3. Remove sensor from thermostat housing.

INSTALLATION

1. Apply sealant to sensor threads (new replacement sensors will have sealant already applied).
2. Install coolant temperature sensor into thermostat housing. Tighten to 11 N.m (8 ft. lbs.) torque.
3. Connect wire connector.
4. Fill cooling system. 

Crankshaft Position Sensor <--> [Crankshaft Position Sensor] > < Engine Coolant Temperature (ECT) Sensor <--> [Coolant Temperature Sensor/Switch (For Computer)]|Specifications|Page 2529