Thermostat: Service and Repair

Thermostat - 3.0L (4V)













Removal and Installation

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

2. Disconnect the lower radiator hose from the thermostat housing.

3. Remove the 2 bolts, thermostat housing cover, O-ring seal and thermostat.
- To install, tighten to 10 Nm (89 lb-in).


4. NOTICE: Use Motorcraft(R) Specialty Orange Engine Coolant. Do not mix coolant types. Mixing coolant types degrades the corrosion protection of the coolant. Failure to follow these instructions may damage the engine or cooling system.

To install, reverse the removal procedure.
- Clean and inspect the O-ring seal. Install a new seal if necessary. Lubricate the O-ring seal with clean engine coolant.


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