Several reasons for high vehicle water temperature

When the vehicle water temperature is high, everyone knows that you can't continue driving. So what is the cause? How to check? How to determine the cause of the fault? 

There are usually three reasons for the high water temperature of the vehicle: one is the lack of coolant, the second is that the coolant cannot circulate, and the third is that the heat of the coolant cannot be quickly dissipated.

The simplest and most common reason for high water temperature is lack of coolant. Regardless of the car, the coolant will be depleted over time. In this case, just add coolant to above the minimum scale, and the high water temperature fault can be eliminated.

When adding, just be careful not to get burned, and wait until the water temperature drops before opening the lid. 

The most common reason for the failure of coolant circulation is a damaged thermostat.

The inspection method is generally based on the temperature difference between the upper and lower water pipes. The electronic thermostat can also be detected by computer to determine its fault.

Thermostat damage causes high water temperature because it is stuck in the closed state and cannot be opened. The coolant can only circulate in a small way and cannot circulate in a large way to dissipate heat, so the water temperature will rise quickly.

In addition to the thermostat, a damaged water pump can also prevent the coolant from circulating. It is necessary to determine whether it is the water pump or the thermostat based on the specific fault phenomenon.

A relatively simple method is to turn on the heater to check. If there is warm air, it means the coolant is circulating and the water pump is not broken. If the water temperature is high and there is no warm air, it means the water pump is broken.