Buzzing Sound When Accelerating Disappears Upon Releasing the Throttle?
2 Answers
Detailed explanation and solutions for the phenomenon where a buzzing sound occurs when accelerating and disappears upon releasing the throttle are as follows: 1. Component Damage: It could be due to a faulty fuel pump or clutch release bearing in the car. Solution: Have it inspected and repaired at a repair shop, replacing the damaged components. 2. Installation Error: Check if there is any air leakage in the engine's intake pipe, whether the air filter is installed correctly, and observe where exactly the buzzing sound is coming from. If it's on the right side of the engine, it's likely an issue with the engine belt; if it's on the left, it could be a problem with the throttle valve. Solution: Perform repairs and adjustments based on the identified issues.
I've encountered a similar situation before - hearing a buzzing electrical noise when pressing the accelerator pedal, which disappears when releasing it. This is usually caused by issues with the electronic throttle system, such as loose or corroded wiring connections at the accelerator pedal that produce noise when current flows. Alternatively, it could be the throttle body motor operating abnormally due to excessive carbon buildup making it work harder. More seriously, it might indicate unstable alternator output voltage affecting the entire vehicle's electrical system. I recommend first checking the engine bay wiring harness for any damage or ground friction, and ensuring battery terminals are tight. If the noise persists, it's best to visit a professional repair shop for diagnostic code reading to prevent minor issues from escalating into major repairs. Regular cleaning of throttle components during maintenance can help reduce such problems.
