Thermostat: Service and Repair

Removal Procedure

Caution: In order to avoid being burned, do not service the engine while it is still hot. Service the engine when it is cool.





1. Drain the coolant to a level below the thermostat. Refer to Draining and Filling Cooling System.
2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Powertrain Management.
3. Disconnect the ground lead from the coolant outlet.
4. Remove the bolt/stud and the bolt on the coolant outlet.
5. Remove the coolant outlet.
6. Remove the thermostat.
7. Clean all of the parts and the sealing surfaces.

Installation Procedure





1. Install the thermostat.
2. Install the coolant outlet.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the bolt and the bolt/stud.
Tighten the bolt and the bolt/stud to 25 Nm (18 ft. lbs.).
4. Install the ground lead to the bolt/stud.
5. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Powertrain Management.
6. Refill the coolant. Refer to Draining and Filling Cooling System.
7. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.