What Causes Throttle Vibration in a Car?

[NathanFitz]

Reasons for throttle vibration in a car: 1. The engine mount rubber is leaking oil or has aged and cracked, significantly reducing its shock absorption effect, thus causing the throttle pedal to vibrate; 2. Clutch slippage. In manual transmission and dual-clutch models, the power transfer and disconnection between the engine and the transmission are accomplished by friction plate clutches. If the clutch plates are severely worn or the damping springs are broken, it will cause the throttle pedal to vibrate. Modern cars use electronic throttle bodies instead of the old cable-type throttle bodies, which means there is no physical connection between the throttle pedal and the throttle body. If you feel the throttle pedal vibrating when pressing the accelerator, it is mostly due to engine resonance transmitted through the car body to the throttle pedal, making the driver feel the vibration when placing their foot on the pedal. This vibration sensation is particularly noticeable during acceleration, and prolonged exposure can cause numbness in the foot.