Reasons for Excessive Vibration When the Car Air Conditioner is On?

[AliyahAnn]

Reasons for excessive vibration when the car air conditioner is on are as follows: 1. Engine misfire: An engine misfire mainly refers to one or more cylinders not functioning properly, typically manifested as: intermittent exhaust gas flow, severe shaking of the exhaust pipe, noticeable engine vibration, and sometimes accompanied by a sputtering sound. This is often related to ignition coil failure. 2. Worn or loose engine mounts: Engine mounts are rubber blocks placed between the engine and the car frame. Their purpose is to reduce vibration and cushion the engine's operation while also securing the engine in place. Once these mounts become worn or loose, the engine's vibration will become significantly worse. Replacing the engine mounts can greatly reduce this effect.