Engine Coolant Thermostat Replacement 3.4L

1. Remove the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .
2. Remove the thermostat.
3. Clean the mating surfaces.

1. Install the thermostat.
2. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .
3. Inspect the system for leaks.

Engine Coolant Thermostat Replacement 2.2L - L61

1. If equipped with an automatic transmission, remove the exhaust manifold. Refer to Exhaust Manifold Removal in Engine Mechanical - 2.2L (L61).
2. Drain the cooling system. Refer to Cooling System Draining and Filling .



3. Remove the thermostat housing to water pump feed pipe bolts.



4. Remove the thermostat housing to water pump feed pipe.



5. Remove the thermostat.

1. Install the thermostat.



2. Install the thermostat housing to water pump feed pipe.

Notice: Refer to Fastener Notice in the Preface section.




3. Install the thermostat housing to water pump feed pipe bolt.

Tighten
Tighten the thermostat housing to water pump feed pipe bolt to 10 N·m (89 lb in).

4. If equipped with an automatic transmission, install the exhaust manifold. Refer to Exhaust Manifold Removal in Engine Mechanical - 2.2L (L61).
5. Fill the cooling system. Refer to Cooling System Draining and Filling .