Thermostat: Service and Repair

Thermostat - 3.7L













Removal and Installation

1. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.

2. Remove the air cleaner outlet pipe. For additional information, refer to Intake Air Distribution and Filtering [1][2]Diagrams.

3. NOTICE: Cover the accessory drive belts to prevent coolant contamination of the belts.

Completely cover the accessory drive belts with waterproof plastic.

4. If installing a new coolant inlet connector, release the clamp and disconnect the lower radiator hose.

5. Remove the bolts and the coolant inlet connector.
- To install, tighten the bolts to 10 Nm (89 lb-in).

6. Remove the thermostat and the thermostat O-ring seal.
- Discard the O-ring seal.

7. To install, reverse the removal procedure.
- Use a new O-ring seal and lubricate it with clean engine coolant.

8. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.