water temp gauge fitting

• 2022-11-03

The water temp gauge fitting mainly is water temp sensor. The water temperature sensor converts the temperature of cooling water into a signal, which is then transmitted to the computer controller to correct the fuel injection quantity. When the temperature is low, increase the fuel injection, correct the ignition advance angle, increase the ignition advance angle at low temperature, delay the ignition advance angle at high temperature, and control the idle speed control valve at low temperature to increase the speed.

The water temp gauge fitting: water temperature sensor is generally used to detect the temperature of the water tank. There is generally more than one water temperature sensor in modern cars, and the installation position and function are different. In the past, the old engine only had one water temperature sensor. The most serious consequence after it broke down was that I didn't know the specific water temperature, which basically didn't affect driving. However, the engines of modern cars need to be carefully evaluated before reaching a conclusion. Generally, there are at least two water temperature sensors in the current automobile engine, one of which is the water temperature gauge sensor, and the other is to control the fan startup (generally, the fan speed can be controlled hierarchically according to the temperature).

If the water temperature sensor is damaged, the car will be difficult to start in cold, the electronic fan will keep turning or not, and the idle speed will be too high. If the water temperature sensor is damaged, it will affect the normal operation of the car, so it must be replaced immediately. The engines used in cars are water-cooled engines, which rely on the continuous circulation of coolant in the engine for heat dissipation.

If the water temperature sensor of the car is broken, the indicator pin of the water temperature gauge will not move and point to the highest position. Or it is difficult to start the cold car because of the water temperature sensor failure. When the cold car starts, it still displays the temperature signal of the hot car. The ECU cannot get the signal of the too rich mixture, and can only provide the thinner mixture of the engine. The fuel consumption will increase and the idle speed will be unstable; It is difficult to accelerate. The accelerator is pressed to the bottom and the engine speed cannot be increased.