mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Thermostat, Engine Cooling|Testing and Inspection|Page 1871 > < Engine - Coolant Temperature Sensor/Switch|Locations|Page 1867
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Thermostat: Testing and Inspection

THERMOSTAT INSPECTION [LF, L5]

1. Remove the thermostat.  See: Service and Repair

2. Visually check that the thermostat valve is closed.

3. Place the thermostat in water.

WARNING:

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During inspection, the thermostat and water are extremely hot and can cause severe burns. Do not touch the thermostat and water.

4. Heat the water and check the following. 

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Opening temperature and valve lift

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If there is a malfunction, replace the thermostat.  See: Service and Repair

Thermostat initial-opening temperature

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80-84 °C {176-183 °F}

Thermostat full-open temperature

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97 °C {207 °F}

Thermostat full-open lift

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More than 8.0 mm {0.31 in}

Thermostat, Engine Cooling|Testing and Inspection|Page 1871 > < Engine - Coolant Temperature Sensor/Switch|Locations|Page 1867