Thermostat Inspection - 3.0L
WARNING: This page is about a different car, the 2007 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the water thermostat.
- Check the water thermostat for seating. Hold the water thermostat up to a lighted background. Leakage of light around the thermostat valve at room temperature indicates that a new water thermostat should be installed. Some water thermostats have a small leakage notch at one location on the perimeter of the thermostat valve, which is considered normal.
- Immerse the water thermostat in a boiling antifreeze and water mixture.
- Initial-opening temperature: 84-88°C (183-190°F)
- Full-open temperature: 100°C (212°F)
- Full-open lift: 3.2 mm (0.126 in) minimum