Thermostat Housing: Service and Repair

Thermostat Housing

Removal

CAUTION: Anti-freeze concentration must be maintained at 50%.

CAUTION: Engine coolant will damage the paint finished surfaces. If spilt, immediately remove the coolant and clean the area with water.
1 Remove the cover and disconnect the battery ground cable. For additional information, refer to Specifications [1][2]Battery
2
WARNING: Since injury such as scalding could be caused by escaping steam or coolant, do not remove the filler cap from the coolant expansion tank while the system is hot.
Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding - Vehicles Without: Supercharger Cooling System Draining, Filling and Bleeding
3 Remove the throttle body. For additional information, refer to Throttle Body Service and Repair

4 Release the clips and disconnect the 5 coolant hoses.

5 Remove the thermostat housing.
- Remove the 4 Torx bolts.
- Disconnect the ECT sensor electrical connector.

6
NOTE:
Do not disassemble further if the component is removed for access only.
Remove the ECT sensor.
- Remove the retaining clip.
7 Remove the thermostat.
- Remove the 3 screws.

8 Remove and discard the 3 O-ring seals.

9 Release and remove the thermostat.

Installation
1 Install the O-ring seals.
2 Install the thermostat.
- Tighten the Torx screws to 4 Nm (3 lb.ft).
3 Install the ECT sensor.
- Install the retaining clip.
4 Install the thermostat housing.
- Connect and secure the electrical connector.
- Install the bolts and tighten to 10 Nm (7 lb.ft).
- Connect and secure the coolant hoses.
5 Install the throttle body. For additional information, refer to Throttle Body Service and Repair
6 Refill the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding - Vehicles Without: Supercharger Cooling System Draining, Filling and Bleeding
7 Connect the battery ground cable and install the cover. For additional information, refer to Specifications [1][2]Battery