Why does the car tremble when the air conditioner is turned on?

1, dirty throttle, affecting the engine. If the air conditioner is turned on again at this time, the idle speed of the engine will increase and the steering wheel will shake. So as long as the throttle is cleaned, this situation can be avoided. In general, the cost of cleaning the throttle valve is around 65 yuan.

2. The steering wheel wobbles when the air conditioner is turned on, which may also be because the car has low power and automatic transmission. If the idle speed is high, it means that the compressor is working. When it is not working, the idle speed is low and the steering wheel will not shake. This phenomenon is quite common, and car owners need not worry. You'd better go to the 4S shop first.

Inspection parts of automobile air conditioner jitter:

(1), check the high and low pressure of the air conditioner. When the pressure is too high, the engine load will increase sharply.

(2), check the air conditioning electromagnetic clutch suction.

(3), check whether the air conditioner radiator is dirty.

(4), check whether there is too much condensed water.

Other causes of car jitter:

Ignition system problem

These four reasons are responsible for 90% of the car's jitter when idling. If the ignition system of the car fails, it will lead to the poor operation of the ignition system and the poor condition of the spark plug, which will lead to the unstable failure of the car at idle speed. The solution is to check the working conditions of spark plug, high voltage line and ignition coil, and whether there is too much carbon deposit in spark plug. Once found, clean or replace the spark plug immediately.

Poor fuel quality

According to the survey, most car owners in China have unstable faults such as "idle speed" jitter, which has a great relationship with fuel quality. Poor fuel quality will damage the performance of the engine, thus causing the problem of idle jitter. The solution to this problem is to clean the "accelerator" of the car in time, which can basically eliminate all kinds of common faults. If it can't be solved, it can only be repaired. If you want your car not to have this problem when idling, you should pay attention to the quality of oil when refueling, and you must go to a regular gas station to refuel.

Excessive carbon deposition or aging of engine.

There is too much carbon deposit in the engine, and the gasoline sprayed by the fuel injection head will be absorbed by the carbon deposit during cold start, which leads to too thin mixture during cold start and difficult start. In this case, only when the gasoline absorbed by carbon deposits is saturated can it easily enter the car. After getting on the bus, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, which will make the mixture rich, and the combustible mixture of the engine will be diluted and concentrated, resulting in idling jitter after cold start. The solution to this problem is to clean the oil circuit and check whether there is carbon deposit in the idle motor, which should be cleaned.