Automobile engine, if the economizer valve doesn't open, there is something wrong with the water temperature sensor. Does it affect the normal driving of the car?

Of course, there is one problem. If the thermostat valve fails to open, the engine will be damaged by high temperature. If the water temperature sensor is damaged, the fuel injection of the vehicle will be abnormal. When the water temperature does not reach the working temperature, the throttle opening will be adjusted to adjust the mixture concentration. This makes the mixture easier to burn. If the water temperature sensor is broken, the mixture will be too rich and lead to high fuel consumption.