Causes and solutions of automobile warm air not being hot
(1) Slow or non-rotating speed of the blower: check whether the blower motor and speed regulating resistor are damaged, and if so, repair or replace them.
(2) Waterway blockage: Check the drain pipe and replace the radiator if necessary.
(3) The water pipe joint falls off or the water valve fails: connect the fallen nozzle and replace the failed water valve.
(4) The temperature damper can't return normally: Adjust the temperature damper according to regulations, and replace it with a new one if necessary, so that the temperature damper can return normally.
The reason why the car warm air is not hot-the problem of cooling system
First, the thermostat is often opened or opened too early, which causes the cooling system to make a large cycle prematurely, and the outside temperature is very low. Especially when the car is driving, cold air quickly cools the antifreeze, the engine water temperature does not come up, and the warm air does not heat up.
Second, the water pump impeller is damaged or lost, so that the flow through the warm air small water tank is insufficient and the heat cannot come up.
Third, the engine cooling system has air resistance, which leads to poor circulation of the cooling system, resulting in high water temperature and no warm air. If there is air in the cooling system all the time, it is likely that the cylinder pad is damaged and air leaks into the cooling system. If the inlet pipe of the small heating tank is very hot and the outlet pipe is very cold, this situation should be that the small heating tank is blocked. The small heater water tank should be replaced.
If there is a jam, please clean it. If there is no blockage, check whether the warm air inlet pipe and return pipe are hot. Hot water pipe means that the windshield of your heater is in the wrong position and can't guide the wind direction according to your requirements. If it's not hot, then the heating box is blocked.