What Causes Severe Vibration When the Car Air Conditioner is On?
2 Answers
Severe vibration when the car air conditioner is on can be caused by the following reasons: 1. Dirty throttle body: This affects the engine. If the air conditioner is turned on at this time, it will increase the engine idle load, resulting in steering wheel vibration. 2. Throttle carbon buildup: If the throttle body has not been maintained for a long time, carbon deposits can easily form, obstructing engine air intake. This causes the engine to struggle or barely power the compressor, leading to idle vibration. The solution is to clean the throttle body. If driving conditions are harsh, regular cleaning is recommended, preferably every 10,000 kilometers.
The car shakes badly when the AC is turned on, an issue I've encountered several times. The main reason is that when the AC compressor starts, the engine load suddenly increases. If the engine mounts are worn or damaged, their cushioning effect diminishes, and the vibrations are directly transmitted to the car body. A faulty compressor itself can also add extra burden. I remember during my last check-up, severely worn spark plugs were found, causing unstable idling and more noticeable shaking when the AC was turned on. A loose belt might also lead to uneven power transmission. Ignoring this not only makes driving uncomfortable but can also accelerate component wear and increase fuel consumption. My advice is to visit a repair shop immediately if you notice shaking. A professional mechanic can use tools to diagnose issues like engine mounts and spark plugs. Regular maintenance can also prevent similar problems, as safe driving is the top priority.
