Why does the car idle unstable when the air conditioner is on?

[VonAngela]

The reasons for unstable idling when the car air conditioner is on: 1. There is a fault in the air conditioning system, which may be caused by a malfunction in the air conditioning circuit or intermittent operation of the air conditioner; 2. There is a problem with the engine, the most common being excessive carbon deposits in the engine. The car air conditioner refers to the air conditioning device installed in the car, which can cool, heat, ventilate and purify the air in the compartment. Carbon deposits in the engine are the main cause of car shaking. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in a too lean mixture during startup, which can cause sudden stalling. The solution is to clean the fuel system, check the idle speed motor, and clean the throttle. Spark plugs are consumable parts and need to be replaced regularly. If it is found that the spark plugs have excessive carbon deposits or the ignition gap is too large, they need to be replaced.