Listen to the sound. See if there is any fetation. The electric butterfly valve of a car, also called "suspension", is composed of a tension spring and an electric butterfly valve. The electric butterfly valve is not used to support the weight of the car body, but to restrain the shock of the spring when it rebounds after absorbing shock and absorb the energy of the road impact
If you drive a car with a broken electric butterfly valve, you will be able to understand the bounce of the car after passing through every pothole and height, and the electric butterfly valve is used to restrain this bounce. Without the electric butterfly valve, it is impossible to control the rebound of the tension spring. The car will bounce severely when encountering high and low roads, and the tire grip and tracking loss will be caused by the vibration of the tension spring up and down when cornering.
With valve glue, when we travel on some bumpy roads, we don't need to worry about the damage caused by the strong sensation of the car. The function of the valve belt is to make the car body stable when the tires sink, so that we can drive more comfortably.