Inspection After Removal

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Check valve seating condition at ordinary room temperatures. It should seat tightly.

Check valve opening temperature and maximum valve lift.

THERMOSTAT TEMPERATURE CHART

Thermostat	Standard Values
Valve opening temperature	82°C (180°F)
Valve lift	8.6 mm / 95°C (0.339 in / 203°F)

Then check if valve closes at 5°C (9°F) below valve opening temperature.

Fig 1: Checking Thermostat Valve Opening Temperature

Courtesy of NISSAN MOTOR CO., U.S.A.