Diamante ES Sedan V6-3.5L SOHC (1997)
Thermostat: Testing and Inspection
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Check that valve closes tightly at room temperature.
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Check for defects or damage.
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Check for rust or encrustation on valve. Remove if any.
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Immerse thermostat in container of water. Stir to raise water temperature and check that thermostat valve opening temperature and the temperature
with valve fully open, valve lift over 8 mm (0.31 in.), is at the standard value.
Standard value:
Valve opening temperature: 82° C (180° F)
Full opening temperature: 95° C (203° F)
NOTE: Measure valve height when fully closed. Calculate lift by measuring the height when fully open.