Thermostat: Service and Repair

Thermostat - 5.4L (4V)

Material:

Removal and Installation
1. Drain the engine cooling system.
2. Remove the 2 bolts and position aside the thermostat housing cover and hose assembly.
- To install, tighten to 10 Nm (89 inch lbs.).
3. Remove the O-ring seal and the thermostat.
- Discard the O-ring seal.
4. To install, reverse the removal procedure.
- Lubricate the new O-ring seal with clean engine coolant.
5. Fill and bleed the cooling system.