What are the reasons for the thermostat not opening?
1 Answers
Here are the specific reasons why the thermostat may not open: 1. Water temperature: The water temperature is not high enough. 2. Blockage: The water passage is blocked. 3. Freezing: The radiator is frozen. Below is additional information about the thermostat: 1. High temperature and pressure: Water with excessively high temperature and pressure cannot be forced into the water tank by opening the radiator cap and may damage the water jacket of the small circulation system. 2. Working principle: The thermostat mainly uses a wax-type thermostat. When the cooling temperature is below the specified value, the refined paraffin in the thermostat's temperature-sensitive body remains solid, and the thermostat valve closes the channel between the engine and the radiator under the action of the spring. The coolant returns to the engine via the water pump, performing a small circulation within the engine.