Why does the Geely Boyue engine shake when the air conditioning is turned on?
3 Answers
The most common reason for the Geely Boyue engine shaking when the air conditioning is turned on is a dirty throttle body, which affects the engine. When the air conditioning is turned on in this condition, it increases the engine idle load, resulting in steering wheel vibration. Therefore, cleaning the throttle body can prevent this issue. The compressor increases the engine load: When the air conditioning is activated, the compressor also starts working, and since the compressor is driven by the engine, it increases the engine load. This increased load means the throttle opening needs to widen to allow more air intake. Obstructed air intake reduces engine pressure: After turning on the air conditioning, the engine load suddenly increases, and the throttle opening expands. At this point, the drawback of a dirty throttle body becomes more pronounced. The throttle may stick or fail to open to the proper position, obstructing air intake and reducing engine power, ultimately leading to engine shaking.
Engine shaking when the air conditioning is on is quite common in the Geely Boyue. When the AC compressor starts, the engine load increases, which is like adding a temporary heavy burden. If the throttle is too dirty and clogged, air intake becomes restricted; or if the spark plugs are old and ignition is insufficient; or if half of the ignition coils are faulty, the power output becomes uneven. Additionally, the alternator might be delivering unstable power, or the engine mounts might be loose, transmitting vibrations into the cabin. With my years of experience in car repair, I suggest starting with the basics: check the condition of the spark plugs and the cleanliness of the throttle—replacing spark plugs yourself isn’t difficult. If the shaking is severe, have a professional mechanic run a computer diagnostic immediately to prevent minor issues from escalating into serious engine wear. Regular maintenance can prevent problems, such as cleaning the intake system every 10,000 kilometers.
I've been driving a Geely Boyue for two or three years and have encountered this issue. The shaking when the air conditioning is on is usually due to the sudden activation of the compressor, which requires the engine to compensate with more power output. It could be that carbon buildup in the engine is blocking the air intake, or the fuel injectors are sticking and not spraying a uniform mist of fuel; or maybe the old battery's voltage is dropping, and the alternator can't keep up with the demand. Last time my car shook badly, it was due to worn-out spark plugs. I bought new ones and replaced them myself, and the car immediately ran much smoother. I recommend paying attention to regular maintenance to avoid small savings leading to big troubles. Now, check if the battery voltage is stable and inspect the cleanliness of the throttle body. If you really want to solve the issue, spend a little money to fix it properly for a more worry-free drive.
