Solution: Replenish the coolant to ensure the normal water circulation system of the engine. If there are other problems, please solve them first, and then add coolant to the normal level.
(2) During the previous maintenance, the thermostat was not installed due to the high water temperature, or the thermostat was damaged in the normally open position, so that the engine water circulation was always in a state of large circulation. Coupled with the low outside temperature and good heat dissipation, it is difficult to raise the engine water temperature, so the warm air is not hot.
Solution: Add or replace a new thermostat.
Extended data:
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Automobile heating system is a complete set of devices that blow cold air to the surface of heat exchanger, absorb its heat and introduce it into the car, thus increasing the temperature inside the car.
Water heating and warm air system
The heat source comes from the engine coolant, and the water heating system is mostly used in cars, trucks and buses with low heating requirements. Water heating and warm air system is mainly composed of heater, hot water regulating valve, blower and control panel.
Among them, the blower is composed of adjustable speed DC motor and squirrel cage fan, which is used to blow cold air to the heater, and the cold air is heated and sent into the car. By adjusting the speed of the motor, the air supply to the compartment can be adjusted.
Air heating system
The heat source comes from the engine exhaust system. Air-cooled heating system is mostly used in air-cooled engine cars.
Heat exchanger heating system: When heating, turn the waste gas valve 4 to the position shown in Figure 2, the hot air in the exhaust pipe is introduced into the heat exchanger 5, and the cold air blown by the blower is introduced into the car for heating or defrosting after absorbing heat through the heat exchanger.
Gas heating system: A heating system that directly heats air with fuel is called gas heating system.