Engine cooling system failure may be caused by the following reasons:
1. The cooling system of the engine is blocked by air, which leads to the problem that the cooling circulation system of the automobile can't work normally and the warm air is not hot. If the inlet pipe of the warm air small water tank is hot and the outlet pipe is cold, it means that the small water tank is blocked and needs to be replaced.
2. The water pump impeller of the vehicle is damaged or lost, which reduces the amount of water in the water tank, thus causing the warm air not to be hot, so it is necessary to replace the new water pump impeller.
3. It is also possible that the thermostat has been turned on or turned on too early, which leads to the early circulation of the cooling system, the low temperature outside the car, and the rapid cooling of the antifreeze by the cold air outside, resulting in insufficient temperature rise of the water tank and insufficient warm air. The thermostat needs to be adjusted or repaired.
The problem of the control mechanism parts of the warm air may be due to the blockage of the filter screen, which makes the air volume blown into the car by the blower insufficient or the distribution of cold and hot air unreasonable. At the same time, it is also necessary to check whether each gear of the blower can reach enough speed, check whether the control damper of cold and warm air falls off and repair it in time.
(Photo/Text/Photo: Pacific Auto Network Li Xiongwei)