car water temp gauge point hi when no coolant

• 2023-09-04

If there is no coolant in the car water tank. The water temperature of the engine will be very high. In severe cases, it can cause the engine to pull. The water temperature gauge on the instrument will definitely get high! Basically, it will reach the top.

Resistance detection: The water temperature sensor can be heated and its resistance value can be measured (at an external temperature of 30 degrees Celsius, the resistance is approximately 1.4 kiloohms to 1.9 kiloohms). When the resistance value is greater than the nominal value, it indicates that the part has a circuit breaking fault or the resistance value has increased and is damaged; When the measured resistance value is less than the nominal value, it should be considered that it is the peripheral connected components that cause the influence of other parts together. One or both ends of the components can be separated from the circuit for measurement, which is convenient to obtain accurate measurement results. 

Insufficient coolant: Prolonged water circulation during engine operation can cause slow loss of coolant in the engine cooling system, resulting in a shortage of water in the water tank. If the owner fails to promptly inspect and add coolant, it can easily lead to high engine water temperature. You can temporarily find a place to find some cold water to replace this, but once you drive it, you need to check the water temperature. If the water temperature gauge is busy and alarms, you should immediately stop and turn off the engine. After that, it may take about an hour. Then you can slowly start it, cycle it like this, and find a shop where you can repair it. 

If the engine is running out of coolant due to high temperature and you don't have coolant on hand, then you can use local materials and find a nearby water source to add it. When opening the engine filling cap, you should pay attention to opening it slightly to release the high-temperature gas to avoid burns. Overheating the engine is very dangerous, and bad luck may cause the engine to be damaged. If the pointer of the water temperature gauge enters the red zone, stays high, or repeatedly vibrates in the red zone while driving at high speed on the highway or when the car is climbing a slope, emergency measures must be taken.