How to solve if the car water temp gauge not work?

• 2023-03-10

The water temperature gauge doesn't move for a short time, and the car can continue to run. The reason why the water temperature gauge doesn't work may be that the water temperature gauge or the temperature probe is broken. As long as the water tank is not short of water, the normal driving will not be affected. It is recommended not to run at full load before troubleshooting. Whether the fuel consumption is not related to the immobility of the thermometer, but to the running condition of the vehicle . If the water temperature sensor is broken, the temperature signal of the water temperature cannot be detected, so the water temperature meter will not move . The reason may be that the electric heating coil of the sensor is burnt or the contact is poor.

The car's water temperature gauge doesn't work, and the heating is not hot because the car's thermostat has failed. If there is no thermostat , the temperature of the engine may be too low, resulting in the heating is not hot . At this time , the engine needs to temporarily stop water circulation to ensure that the engine temperature is not too low . 

When starting a cold engine in winter , the thermostat valve is closed due to low coolant temperature . When the coolant is in small circulation , the temperature rises quickly and the thermostat valve opens . At the same time, the low temperature coolant in the radiator flows into the body, making the coolant cool down again, and the thermostat valve is closed again. When the coolant temperature rises again , the thermostat valve opens again. Until the temperature of all the coolant is stable , the thermostat valve will not open and close repeatedly. The phenomenon of thermostat valve opening and closing repeatedly in a short time is called thermostat oscillation . When this phenomenon occurs, it will increase the fuel consumption of the vehicle .

The thermostat can also be arranged in the outlet pipe of the radiator . This arrangement can reduce or eliminate the oscillation of the thermostat and accurately control the coolant temperature . However , its structure is complex and its cost is high . It is mainly used for high-performance vehicles and vehicles that often drive at high speed in winter .