What Causes the Abnormal Noise When Shifting Gears and Pressing the Accelerator?

[AdamAnn]

Reasons for abnormal noise when shifting gears and pressing the accelerator are as follows: Engine temperature too low: When the car is cold-started, the engine temperature is relatively low, and various components and fluids have not reached an optimal working environment or state. Therefore, when accelerating, the engine may produce abnormal noises. This is a normal phenomenon and does not require special attention. After the car runs for a while and the engine temperature rises, the abnormal noise when pressing the accelerator will resolve itself. Engine oil deficiency: If the engine oil is insufficient or has not been replaced for a long time, causing the oil to deteriorate, its lubricating effect will be compromised, leading to friction between components and resulting in abnormal noise. In this case, the engine oil should be replaced promptly. Damaged car half-shaft: There are many reasons why a damaged car half-shaft can cause abnormal noise when pressing the accelerator, including a twisted or broken half-shaft, worn spline teeth, etc. In such cases, it is necessary to visit a repair shop or a 4S store for professional inspection and repair.