What Causes Vehicle Vibration During Driving?

[IrisLynn]

The reasons for vehicle vibration during driving include: damaged spark plugs, poor fuel quality, excessive carbon buildup, unstable oil pressure, etc. It is necessary not only to inspect the throttle valve and idle speed motor but also to check if there is excessive carbon buildup or dirt in the intake tract. If there is too much buildup, it can alter the cross-sectional area of the air passage, preventing the control unit from precisely regulating the idle intake air volume. This can result in an overly rich or lean air-fuel mixture, leading to abnormal combustion and engine vibration. If you have already cleaned the engine carbon deposits, changed the oil and spark plugs, but still experience body vibration while driving, check whether the fuel supply pressure and intake pressure sensors are functioning normally. Abnormal fuel pump supply pressure or incorrect values and poor performance of the intake pressure sensor can also cause body vibration. In such cases, it is necessary to check the oil pressure and replace components if needed.