
Severe vibration when the car's air conditioner is on can be caused by the following reasons: Dirty Throttle Body: This affects the engine. If the air conditioner is turned on at this time, it will increase the engine's idle load, resulting in steering wheel vibration. Carbon Buildup in the Throttle Body: If the throttle body has not been maintained for a long time, carbon deposits can easily form. These deposits obstruct the engine's air intake, causing the engine to struggle or barely power the compressor, leading to idle vibration. The solution is to clean the throttle body. If the driving environment is harsh, it's best to clean it regularly—recommended every 10,000 kilometers.


