Removal Procedure
- Remove the radiator cap.
- Open the drain plug (3) and the drain coolant to a level below the thermostat.
- Close the drain plug (3).
- Remove two bolts and the thermostat cap (3) from the intake manifold.
- Remove the thermostat (1) and the gasket from the thermostat housing.
- Clean any gasket material, corrosion or debris from the thermostat cap.
- Clean the intake manifold mating surfaces.
- Inspect the thermostat. Refer to Thermostat Diagnosis .
Installation Procedure
- Install the thermostat (1).
- Install a new thermostat gasket.
- Install the thermostat cap (3) to the intake manifold.
- Secure the thermostat cap (3) with two bolts.
- Fill the radiator with approved coolant. Refer to Cooling System Draining and Filling in this section.
- Start the engine.
- Allow the coolant to attain operating temperature (both hoses feel warm and the coolant is flowing through the radiator).
- Check for leaks in the cooling system.
- Shut off the engine.
- Install the radiator cap.
Important: Position the air bleed valve (2) toward the front of 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.
Tighten
Tighten the thermostat cap bolts to 16 N·m (12 lb ft).
