How to Replace Thermostat in Car?

Most of the time we manually replace the thermostat ourselves in order to save cost. The replacement of the thermostat is easier than other parts. This article can help you judge if the thermostat is failing, as well as the daily inspection of the thermostat.

As an important part of the engine cooling system, the thermostat plays the role of controlling the circulation of antifreeze between the engine and the water tank, automatically adjusting the amount of water entering the radiator according to the temperature of the cooling water, and maintaining the normal operating temperature of the engine.

How often to replace car thermostat

Usually, the diesel engine thermostat will cause the whole device to work abnormally due to the age of use or the defects of the parts themselves, etc.

1. Abnormal temperature display: The engine thermometer shows an abnormal increase in temperature.
2. Noise: The thermostat of construction machinery is damaged, resulting in abnormal sounds of beating and friction in the engine.
3. Coolant leaks: Coolant helps the engine cool down. The temperature will be out of control by the disclosure of coolant caused by the broken thermostat.
4. Fuel consumption: Fuel system parts usually have a significant increase in fuel consumption to improve work efficiency.

What to do after replacing thermostat in car

The following are the method of checking the cummins isx thermostat in the car: Firstly, check whether the coolant is sufficient. Secondly, check the water flow after the engine starts; Thirdly, check the change of water flow and temperature after the water temperature rises.

Check after starting the engine: open the water inlet of the radiator, if the cooling water in the radiator is calm, it means that the thermostat is working normally. Otherwise, it means that the thermostat is not working properly. The reason is if the water temperature is lower than 70°C, the expansion cylinder of the thermostat is in a shrinking state, and the main valve is closed. If the water temperature is higher than 80°C, the expansion cylinder expands, the main valve gradually opens, and the circulating water in the radiator starts to flow.

How long does a car thermostat replacement take

Replacing the thermostat takes 30-60 minutes. The method of judging whether the thermostat is good or bad is as follows: 1. open the filler cap of the cooling water tank, and check whether there is water flow in the cooling water tank. If not, the thermostat is damaged or there is an object stuck between the main valve switch. 2. You can feel the temperature of the upper and lower pipes with your hands. Touch the upper and lower pipes after 3 minutes. If it is a good thermostat, the temperature of the upper and lower tubes is different. Generally, the upper tube is hot and the lower tube is cool. 3. Remove the thermostat from the car for hot and cold water experiments, and observe whether the thermostat will open as the water temperature rises.