Thermostat: Testing and Inspection

INSPECTION

Thermostat Check





1. Immerse the thermostat in water, and heat the water while stirring. Check the thermostat valve opening temperature.
Standard value:

Valve opening temperature:
87 ± 1.5°C (189 ± 3°F) [2.4L ENGINE]
82 ± 1.5°C (180 ± 3°F) [3.0L ENGINE]






2. Check that the amount of valve lift is at the standard value when the water is at the full-opening temperature.
NOTE:
Measure the valve height when the thermostat is fully closed, and use this measurement to compare the valve height when the thermostat is fully open.

Standard value:

Full-opening temperature: 95°C (203°F)
Amount of valve lift:
8.5 mm (0.335 inch) or more [2.4L ENGINE]
9.0 mm (0.354 inch) or more [3.0L ENGINE]