REMOVAL
3.7L
The Engine Coolant Temperature (ECT) sensor on the 3.7L engine is installed into a water jacket at front of intake manifold near rear of generator .
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. Disconnect the electrical connector from the sensor.
3. Remove the sensor from the intake manifold.
2.8L DIESEL
WARNING: Do not remove or loosen the coolant pressure/vent cap, cylinder block drain plugs, or the draincock when the system is hot and under pressure because serious burns from the coolant can occur.
1. Disconnect negative battery cable.
2. Drain the cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
3. Disconnect coolant temperature sensor electrical connector.
4. Remove coolant temperature sensor (3) from cylinder head.