What is the reason for engine shaking when the air conditioning is turned on?

1 Answers
FrankAnn
07/29/25 8:48pm
The reasons for engine shaking when the air conditioning is turned on are as follows: 1. Spark plug carbon deposits. After the vehicle has been used for a period of time, carbon deposits will form on the spark plugs, causing shaking when the air conditioning is turned on; 2. Throttle valve carbon deposits. After the air conditioning is turned on, the engine load increases, and the throttle valve opening expands, amplifying the effects of dirt. If the throttle valve is stuck or does not open to the proper position, it can obstruct the air intake, reducing engine power and causing shaking; 3. Resonance caused by fan deformation during operation after the air conditioning is turned on or vibration due to loose fan mounting screws. The functions of the car air conditioning system: 1. Filtering the air entering the cabin; 2. Absorbing moisture from the air; 3. Maintaining clean air and preventing bacterial growth; 4. Preventing window fogging; 5. Adjusting the cabin temperature.
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