Thermostat: Service and Repair

Engine Coolant Thermostat Replacement (L26/3.8L)

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure




1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement (Service and Repair).
2. Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Service and Repair)Cooling System Draining and Filling (Vac-N-Fill) (Service and Repair).
3. UsingJ 38185 reposition the hose clamp at the thermostat housing.
4. Remove the radiator inlet hose from the thermostat housing.




5. Remove the thermostat housing bolts and housing.




6. Remove the thermostat.
7. Inspect and clean the thermostat housing mating surfaces.

Installation Procedure




1. Install the thermostat.





Notice: Refer to Fastener Notice (Fastener Notice).

2. Install the thermostat housing and bolts.

Tighten the bolts to 25 N.m (18 lb ft).




3. Install the radiator inlet hose to the thermostat housing.
4. UsingJ 38185 position the hose clamp at the thermostat housing.
5. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Service and Repair)Cooling System Draining and Filling (Vac-N-Fill) (Service and Repair).
6. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement (Service and Repair).