Sequoia LTD 4WD V8-4.7L (2UZ-FE) (2001)
2. DISCONNECT WATER INLET FROM WATER INLET HOUSING
Remove the 3 nuts and disconnect the water inlet from the water inlet housing.
3. REMOVE THERMOSTAT
a. Remove the thermostat.
b. Remove the gasket from the thermostat.
INSPECTION
INSPECT THERMOSTAT
HINT: The thermostat is numbered with the valve opening temperature.
a. Immerse the thermostat in water and gradually heat the water.
b. Check the valve opening temperature.
Valve opening temperature: 80 - 84°C (176 - 183°F)
If the valve opening temperature is not as specified, replace the thermostat.
c. Check the valve lift.
Valve lift: 10 mm (0.39 inch) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
d. Check that the valve is fully closed when the thermostat is at low temperatures (below 40°C (104°F)).
If not closed, replace the thermostat.
INSTALLATION