Why does the engine shake severely when the car air conditioner is turned on?
2 Answers
There are several reasons why the engine shakes severely when the car air conditioner is turned on: 1. The air conditioner acceleration device is damaged; 2. There is carbon buildup on the throttle valve; 3. The engine mount has collapsed or is damaged; 4. The air conditioner compressor is stuck. The car air conditioning system consists of a compressor, condenser, expansion valve, and evaporator. The car air conditioner, short for the car air conditioning system, serves the following purposes: 1. To adjust and control the temperature, humidity, air cleanliness, and air flow inside the car cabin to an optimal state; 2. To provide a comfortable riding environment for passengers and reduce travel fatigue, acting as a crucial ventilation device that ensures safe driving.
Last time when I turned on the AC in my car, it shook violently to the point where the steering wheel was vibrating too. It was quite dangerous. This usually happens because when the AC starts, the compressor increases the engine's load. If there's an issue with the engine idle control system, it can't maintain a stable RPM, leading to intensified shaking. Common causes include too much carbon buildup in the idle air control valve or throttle body, preventing timely adjustment of air intake; worn-out spark plugs or faulty ignition coils causing uneven ignition; or worn and loose engine mounts that amplify vibrations when the AC is on. Sometimes, it could also be due to a clogged fuel system causing insufficient fuel injection. I'd recommend starting with simpler fixes, like cleaning the idle air control valve yourself or replacing the spark plugs. If that doesn't work, then it's best to take it to a repair shop for a computer diagnosis. Don't delay as it could lead to more damage. Regular maintenance of these components can effectively prevent such issues. After all, you can't go without AC in hot weather, and safety comes first. Addressing the problem promptly is key.
