Thermostat: Service and Repair

Thermostat - 3.5L













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 and outlet pipe.

3. Disconnect the lower radiator hose from the thermostat housing cover and position it aside.

4. Remove the 2 bolts, thermostat housing cover, O-ring seal and thermostat.
- Clean and inspect the O-ring seal. Install a new seal if necessary.

- To install, tighten to 10 Nm (89 lb-in).

5. NOTE: Lubricate the thermostat O-ring seal with clean engine coolant.

To install, reverse the removal procedure.

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