What Causes the Noise When Accelerating?
2 Answers
Here are the specific reasons for the noise when accelerating in a car: 1. Exhaust system malfunction: Sounds caused by exhaust gasket leaks or perforated exhaust pipes. 2. Intake system malfunction: Air leaks or poor sealing in the intake manifold or throttle body. 3. Engine chassis malfunction: Internal engine noise or loose components around the engine body, or noise caused by resonance interference in chassis parts. 4. Transmission internal malfunction: Noise during driving due to lack of oil or abnormal wear.
That day when I was driving on the highway, I also encountered this strange noise—it squeaked whenever I stepped on the accelerator. Upon careful thought, it might be due to a loose or aged engine belt, especially in dry weather when it's prone to slipping and producing sharp sounds. If the noise resembles metal friction, then the brake pads should be checked for excessive wear. Additionally, an exhaust leak or loose mounting brackets can cause a popping sound during acceleration. Turbocharged models require extra attention to potential issues like loose turbine blades or piping. In fact, one of the most commonly overlooked causes of such abnormal noises is engine carbon buildup, which can create a rattling sound when the throttle is opened wide. It's recommended to visit a repair shop as soon as possible to locate the source of the noise using a stethoscope. Developing a habit of checking the belt tension before driving is also a good practice.
