2. The water pump impeller is damaged or lost, resulting in insufficient flow through the small warm air water tank and no heat coming in.
3. There is air resistance in the engine cooling system, which leads to poor circulation of the cooling system, resulting in high water temperature and neither hot nor cold. If there is air in the cooling system all the time, it may be that the cylinder pad is damaged and the air flows to 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 and should be replaced.
Extended data:
Matters needing attention in the use of automobile warm air in Ou Man;
1, increase humidity
When the warm wind lasts for a period of time, you will obviously feel thirsty and uncomfortable breathing. This is because the air in the north is very dry in winter. Using warm air in a closed environment will aggravate dryness. At this time, you can properly open the window to solve this problem.
2. Set a reasonable wind direction
When heating in winter, the wind direction should be adjusted to the position of blowing feet, so that people will not have obvious suffocation and get good heating effect.