The water temperature of the car is normal, why is the warm air not hot?
the water temperature is normal and the warm air is not hot. It may be that the pump or cooling circuit is affected by air resistance, and there is a problem with the engine cooling system. Coolant can't be circulated, and it can't be sent to the heater tank after heating, so that the heater is not hot.
it is also possible that the pump impeller of the vehicle is damaged or lost, resulting in a decrease in the amount of water flowing through the water tank, which makes the warm air not hot, and it is necessary to replace the pump impeller with a new one. It is also possible that the air conditioning filter screen is blocked and there is something wrong with the warm air control mechanism, which leads to insufficient air volume blown into the car by the blower or unreasonable distribution of cold and hot air, and other warm air is not hot.
The specific reasons why the water temperature is normal and the warm air is not hot are as follows:
1. The air conditioner filter element is dirty and blocked, which will lead to less air blowing and affect the heating effect of the warm air.
2. The thermostat is normally opened or opened too early, which causes the cooling system to have a large cycle too early. If the outside temperature is very low, the cold air will soon cool the antifreeze, the engine water temperature will not come up, and the warm air will not be hot.
3. The water pump impeller is damaged or lost, resulting in insufficient flow through the warm air small water tank and heat loss. There is air resistance in the engine cooling system, which leads to poor circulation of the cooling system, resulting in high water temperature and warm air failure.
4. The car heater uses a blower to blow the heat from the small heater tank into the cab. If the heater tank is blocked, the heat of the small heater tank can't be radiated, and the temperature of the heater can't come out.
5. If the knob is adjusted to warm air, the air volume is large enough and the wind is normal. Blowing out cool air may be caused by out-of-control hot and cold air wires in the warm air tank, damage to the warm air impeller, loss of the air door, etc. If the warm air water valve is damaged, the coolant may not enter the warm air, resulting in the warm air tank not being hot.
In some high-end cars, there will be a heating water valve, which is used to cut off the coolant circulation of the heating water tank when the heating is not used, and reduce unnecessary heat loss. If the heating water valve is damaged, the coolant may not enter the heating water tank, resulting in the heater not being hot.
after the owner knows about the heating and air-conditioning problem of the car, it is difficult to repair because all the parts of the car air-conditioning are in it, so it is best to go to a 4S shop or a repair shop and let professional maintenance personnel solve the problem.