What Causes the Abnormal Noise When Accelerating?

2 Answers
Adams
07/25/25 2:12pm
Reasons for abnormal noise when accelerating: 1. Wear or impurities inside the fuel pump motor; 2. Damaged throttle body or excessive carbon deposits/sludge; 3. Poor lubrication of the accelerator pedal bearing; 4. Damaged clutch release bearing causing incomplete clutch disengagement. The throttle, also known as the air valve or throttle body, refers to the control device regulating engine power. Solutions for abnormal noise when accelerating: 1. Replace the fuel pump; 2. Clean the throttle body and replace its motor; 3. Apply grease to lubricate the bearing; 4. Remove the clutch to replace the release bearing.
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DiJoshua
08/11/25 9:02pm
As a new driver, I noticed a squeaking sound every time I pressed the accelerator pedal when I first started driving, which was quite alarming. After talking with a mechanic, I found out this could be caused by an aging and stuck throttle cable, or friction from loose components near the engine. From my experience, it might also be due to an air intake leak or a malfunctioning fuel injector, especially noticeable during startup or acceleration. I recommend not delaying and getting it diagnosed at a professional repair shop as soon as possible. Otherwise, a minor issue could escalate into major trouble, such as reduced engine performance or increased fuel consumption. A quick check for unusual sounds before driving can help with initial troubleshooting.
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