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Home >> Honda >> 2021 >> CR-V EX-L, AWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - Service Information (Except Hybrid) >> Removal & Installation Test >> Thermostat Removal, Installation, and Test (1.5 L Engine) >> Test

Thermostat Removal, Installation, and Test (1.5 L Engine): Test

NOTE:  Replace the thermostat if it is stuck in the open position at room temperature.

  1. Thermostat - Test
    GHH426714Courtesy of HONDA, U.S.A., INC.
    To test a closed thermostat:

    1. Suspend the thermostat (A) in a container of water. Do not let the thermostat and the thermometer (B) touch the bottom of the hot container.

    2. Heat the water, and check the temperature with a thermometer. Check the temperature when the thermostat first opens, and when it is fully open.

    3. Measure the lift height of the thermostat when it is fully open.

    Standard Thermostat 
    Lift Height:  Above 8.0 mm (0.315 in) min. 
    Starts Opening:  169-176°F (76-80°C) 
    Fully Open:  194°F (90°C)