2. Heat the water gradually and determine the opening temperature of the thermostat valve.
Attention:
- If the thermostat valve is slightly open at normal temperature, replace it.
- Since the heating of the sensitive part of the thermostat lags slightly behind the heating of the water, hold for about 5 minutes at a temperature of about 93°C, and then measure the valve lift.
- Lower the thermostat into the water so that it does not touch the bottom of the container.
[The text was taken from the website HONDABOOK]