Why can't the car start running with the air conditioner on?

The reason why the car can't accelerate when the air conditioner is turned on is that the engine load is heavy, especially in hot summer, the fuel vapor is relatively increased, the fuel pressure in the fuel system is relatively reduced, and the fuel supply is insufficient after the fuel filter is blocked.

Engine power generally refers to the maximum power, but in order to achieve this power, the vehicle must meet the maximum speed. Generally, when driving on urban roads, the engine speed is basically hovering between idle speed and 2000 rpm, but for small-displacement vehicles, this effect is basically not achieved. If there is carbon deposit in the car, the actual output power will be smaller.

In this way, the working air conditioner can even consume half of the work done by the engine. Therefore, it is normal to be stuffy in the car after turning on the air conditioner.

Matters needing attention in turning on air conditioner

1, people should open windows or open external circulation ventilation facilities in a short time after entering the car to introduce fresh air. They should not drive for a long time with the doors and windows closed, let alone sleep or rest for a long time in a closed car.

2. After buying a new car, like a newly renovated house, try to keep the exchange of air inside and outside the car as much as possible, so that the harmful gases inside the car can be volatilized and released as soon as possible.

3. When turning on the air conditioner heater, use the air communication mode inside and outside the car to avoid using the self-circulation mode inside the car for a long time.

4. In areas with serious traffic jams, the air conditioner and heater switches should be temporarily switched to the in-vehicle self-circulation mode, and vehicles driving with windows open should temporarily close the windows. The automobile mainly develops the habit of adjusting the air conditioning circulation system in the car in time according to the air condition outside the car.