What happened to my Beiqi Wangwei m20 when it turned on the air conditioner?

There are generally two reasons. The first is that the air conditioning system has related faults, which may be the fault of the air conditioning circuit or the intermittent operation of the air conditioning; The second is that there is something wrong with the engine, which is more common.

If the engine is in the lowest stable speed range (300-500 rpm), problems such as high and low speed, sudden flameout and too high minimum speed may be considered as unstable idle speed. At present, the air conditioners of most vehicles are driven by compressors, which work by engines.

After the vehicle turns on the air conditioner, the engine speed will increase a little. If the air-conditioning circuit fails, it is difficult for ECU to receive the relevant air-conditioning information and cannot judge the open state of air-conditioning, so it will constantly adjust the engine speed. If the air conditioner works intermittently, it will affect the engine speed intermittently.

If there is too much carbon deposition in the engine throttle, when the compressor starts to enter a high load state, the ECU will constantly adjust the speed.