Thermostat Housing: Service and Repair

Thermostat Housing - 4.0L SOHC

Exploded View, 4.0L SOHC (1 Of 2):

Exploded View, 4.0L SOHC (2 Of 2):

Removal and Installation

1. Drain the engine cooling system.

2. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.

3. Release the clamp and disconnect the upper radiator hose.

4. Release the clamp and disconnect the heater hose.

5. Release the bypass hose clamp and position it down the hose.

6. Remove the bolts and the thermostat housing.
- To install, tighten to 11 Nm (97 lb-in).

7. Inspect the thermostat housing cover O-ring seal. Install a new O-ring seal if necessary.

8. To install, reverse the removal procedure.