Thermostat Inspection

WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Visually check that the thermostat valve is closed.
Place the thermostat and a thermometer in water.
WARNING:
- During inspection, the thermostat and water are extremely hot and they can badly burn. Do not touch the thermostat and water directly.
Heat the water and check the following.
- If not as specified, replace the thermostat.
Fig 1: Thermostat Specifications
Courtesy of MAZDA MOTORS CORP.

Fig 2: Measuring Thermostat Lift
Courtesy of MAZDA MOTORS CORP.