Why does the accelerator pedal vibrate when pressing it?

[BrynleeMarie]

Feeling vibration in the accelerator pedal when pressing it could be due to a dirty throttle body or excessive carbon buildup in the fuel injectors. Over time, a dirty throttle body may not close properly, leading to high engine idle speed. Excessive carbon deposits in the engine can cause the accelerator to shake, especially when starting the vehicle. In severe cases of carbon buildup, the car may even fail to start. Solutions for accelerator pedal vibration: 1. Clean the throttle body and check for blockages; inspect the fuel injectors for excessive carbon buildup. 2. Check the engine mounts. 3. Clean and replace the transmission fluid. 4. Verify the accuracy of the car's wheel alignment, as impacts to the wheel rims or tires may cause deformation, leading to abnormal tire pressure readings.