Thermostat Housing: Service and Repair

Thermostat Housing Replacement

Removal Procedure

Important: The thermostat is not serviceable separately. The thermostat housing (water pump inlet) and thermostat must be replaced as an assembly.





1. Drain the cooling system/engine block.
2. Loosen the air cleaner outlet duct clamps at the throttle body and at the Mass airflow (MAF) sensor.
3. Remove the air cleaner outlet duct.





4. Remove the radiator outlet hose.
5. Remove the thermostat housing bolts.
6. Remove the thermostat housing from the water pump.

Installation Procedure





1. Install the thermostat housing to the water pump.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the thermostat housing bolts.
^ Tighten the bolts to 15 Nm (11 ft. lbs.).
3. Install the radiator outlet hose.





4. Install the air cleaner outlet duct.
5. Install the air cleaner outlet duct clamps at the throttle body and at the Mass airflow (MAF) sensor.
^ Tighten the air cleaner outlet duct clamp screws to 7 Nm (62 inch lbs.).
6. Fill the cooling system. Refer to Draining and Filling Cooling System