1, first eliminate the air resistance. There is air resistance in the thermostat, so the cooling water will not touch the paraffin device. The driver can open the water tank cover, start the vehicle again, and exhaust the air by running the water pump.
2. Secondly, clean the ventilation holes. Check whether the air outlet of the thermostat is blocked. If it is blocked, clean the air outlet in time.
3. Finally, replace the opened valve. The vehicle was warmed up for a long time, but the water temperature was low, which caused the thermostat opening valve to be damaged and needed to be replaced.