Thermostat: Testing and Inspection

2GR-FE COOLING: THERMOSTAT: INSPECTION

1. INSPECT THERMOSTAT

(a) Inspect the thermostat.





HINT
The valve opening temperature is inscribed on the thermostat.

(b) Immerse the thermostat in water and gradually heat the water.





(c) Check the valve opening temperature.

Valve opening temperature:

80 to 84°C (176 to 183°F)

If the valve opening temperature is not as specified, replace the thermostat.

(d) Check the valve lift.





Valve lift:

7.7 mm (0.3031 in.) or more at 95°C (203°F)

If the valve lift is not as specified, replace the thermostat.

(e) Check that the valve is fully closed when the thermostat is at low temperatures (below 40°C (104°F)).

If it is not fully closed, replace the thermostat.