Thermostat: Service and Repair

REMOVAL / INSTALLATION
1. Disconnect the negative battery cable.
2. Drain the engine coolant.
3. Remove in the order shown in the image.
4. Install in the reverse order of removal, referring to Installation Note.





INSPECTION
1. Visually check that the thermostat valve is airtight.
2. Place the thermostat and a thermometer in water.
3. Heat the water and check the following.

Initial-opening temperature: 80-84°C (176-183°F)
Full-open temperature: 95°C (203°F)
Full-open lift: 8.5mm (0.33 in) min.





4. If the gasket of the thermostat is damaged, replace the thermostat assembly.





Installation Note
1. Verify that the jiggle pin is aligned with the projection of the thermostat gasket as shown.





2. Install the thermostat and gasket into the thermostat housing, aligning the tab to the housing, as shown in the image.

Steps After Installation
1. Fill the radiator with the specified amount and type of engine coolant.
2. Check for leaks.