What Causes The Car Heating System To Be Not Hot?

Mar. 15, 2019

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The heating system of the vehicle can be divided into two reasons: one is caused by the engine cooling system, and the other is caused by the poor operation of the heating air control mechanism. When repairing, we must first determine which cause is caused. Carry out the corresponding repairs.

The method of discriminating is very simple: look at the temperature of the two inlet pipes of the warm water tank. If both pipes are hot enough, it means that the air volume control mechanism is a problem. Otherwise, if the two pipes are cool, or a hot one Cool, the description is a cooling system problem.

Possible problems with the cooling system:

1. The thermostat is normally open or the thermostat is turned on too early, so that the cooling system prematurely performs a large cycle, and the outside temperature is very low. Especially when the car runs up, the cold air quickly cools the antifreeze, and the engine water temperature does not. Come, the warm air will not be hot.

2. The impeller of the pump is damaged or thrown, so that the flow through the small tank of the warm air is not enough, and the heat does not come.

3. The engine cooling system has air resistance, and the air resistance causes the cooling system to cycle poorly, resulting in high water temperature and no warm air.

Problems with air volume control agencies:

1. First check if the filter is dirty and clogged, clean it, and replace it if necessary.

2. Check the operation of each gear of the blower, and each gear must reach sufficient speed.

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