Engine Coolant Thermostat Replacement 2.4L

1. Drain the cooling system. Refer to Cooling System Draining and Filling .



2. Remove the exhaust manifold heat shield bolts and shield.



3. Remove the coolant inlet housing bolts through the exhaust manifold.
4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
5. Remove the coolant inlet housing stud from the oil pan.
6. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
7. Remove the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
8. Remove the transaxle-to-engine block brace bolts. Remove the brace. Refer to Transmission Replacement in Automatic Transmission 4T40-E/4T45-E.
9. Remove the radiator outlet pipe. Refer to Radiator Outlet Pipe Replacement .
10. Remove the thermostat.
11. Clean the mating surfaces.

1. Install the thermostat.
2. Install the radiator outlet pipe. Refer to Radiator Outlet Pipe Replacement .
3. Install the transaxle-to-engine block brace and secure with the bolts. Refer to Transmission Replacement in Automatic Transmission 4T40-E/4T45-E.
4. Install the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
5. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
6. Lower the vehicle.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

7. Install the exhaust manifold heat shield and bolt.

Tighten
Tighten the exhaust manifold heat shield bolts to 14 N·m (10 lb ft).

8. Fill the cooling system. Refer to Cooling System Draining and Filling .
9. Inspect the system for leaks.

Engine Coolant Thermostat Replacement 2.2L

1. Drain the cooling system. Refer to Cooling System Draining and Filling .



2. Remove the lower radiator hose from thermostat outlet.



3. Remove the thermostat outlet bolts and outlet.



4. Remove the thermostat.
5. Clean the mating surfaces of the radiator outlet and the radiator outlet pipe.

1. Install the thermostat.



2. Install the thermostat outlet and bolts.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the coolant outlet attaching bolts.

Tighten
Tighten the thermostat outlet bolts to 14 N·m (10 lb ft).

4. Install the lower radiator hose to thermostat outlet.



5. Fill the cooling system. Refer to Cooling System Draining and Filling .
6. Inspect 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 .