What Causes the Abnormal Noise When Accelerating a Car?

[MacMason]

Reasons and solutions for abnormal noise when accelerating are as follows: 1. Fuel pump motor noise: When the fuel pump motor is internally worn or contains impurities, it may produce abnormal noise upon acceleration. This issue requires replacing the fuel pump. 2. Throttle body noise: Modern throttle bodies are electronic, controlled by a motor for opening and closing. Worn motor gears can cause insufficient engagement and abnormal noise. Excessive carbon deposits or sludge in the throttle body can also lead to noise. Cleaning the throttle body is recommended; if the motor is damaged, the throttle body needs to be disassembled to replace the servo motor. 3. Poor lubrication of the accelerator pedal bearing: Apply grease to the bearing for lubrication. 4. Damaged clutch release bearing: This can cause incomplete separation of the clutch plate, resulting in noise. The clutch needs to be removed to replace the release bearing.