What causes abnormal noise when stepping on the accelerator?
2 Answers
The causes of abnormal noise when stepping on the accelerator include abnormal noise from the fuel pump motor, throttle valve noise, insufficient lubrication of the accelerator pedal bearing causing noise, and damage to the clutch release bearing, resulting in incomplete separation of the clutch disc and generating noise. Below is relevant information about the car accelerator: Accelerator: It refers to the control device that regulates the engine power (thrust). Accelerator pedal: Also known as the throttle pedal, it is part of the car's fuel supply system. By controlling the amount of pedal depression, it regulates the throttle valve opening, controls the air intake, and the computer controls the fuel amount, thereby regulating the engine speed. Reasons for the pedal getting stuck: They can be categorized into human-caused, design defects, and insufficient craftsmanship.
I've been driving for over a decade, and throttle pedal noises are actually quite common. I remember during a long highway trip, there was a squeaking sound every time I pressed the gas. After checking thoroughly, I found the linkage under the throttle pedal had loosened, and I fixed it by tightening the screws myself. Another possible cause could be aging belts, which produce annoying squeals; or holes in the exhaust system, causing gurgling noises when accelerating. More seriously, worn bearings in the engine bay can create continuous clicking sounds, and if not repaired promptly, the car may start shaking uncontrollably. I recommend drivers first pull over to inspect, pop the hood to check the pedal linkage and belt condition. If you're not sure what to do, don’t force it—safety risks aren’t worth gambling with. Driving safety isn’t about luck; take it to a professional repair shop for a thorough check to truly put your mind at ease.
