Thermostat Inspection
- Remove the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION .)
- Visually check that the thermostat valve is closed.
- Place the thermostat in water.WARNING:
- During inspection, the thermostat and water are extremely hot and can cause severe burns. Do not touch the thermostat and water.
- Heat the water and check the following.
- Opening temperature and valve lift
- If there is a malfunction, replace the thermostat.
Thermostat initial-opening temperature
86.5-89.5 °C {188-193 °F}
Thermostat full-open temperature
100 °C {212 °F}
Thermostat full-open lift
8.5 mm {0.33 in} or more