acura Workshop Repair Guides

Acura (Honda) Workshop Service and Repair Manuals

Thermostat, Engine Cooling|Locations|Page 2695 > < Thermostat, Engine Cooling|Locations
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Thermostat: Testing and Inspection

Thermostat Housing Exploded View

Thermostat Testing

THERMOSTAT TESTING

If the thermostat is open when cold, it must be replaced.
1. Place thermostat in water filled container as shown in image.

CAUTION: Do not let the thermostat touch the bottom of the container.

2. Heat the water and using a thermometer, measure the temperature at which the thermostat first opens and then fully opens.

Opening Temperatures:

Starts opening: 172°F (78°C)
Fully open: 196°F (91°C)

3. Measure the lift height of the thermostat opening when fully open.

Lift Height:

0.31 in. (8 mm)

Thermostat, Engine Cooling|Locations|Page 2695 > < Thermostat, Engine Cooling|Locations