What Causes the Abnormal Noise When Shifting Gears in the Transmission?
2 Answers
Reasons for abnormal noise when shifting gears in the transmission: 1. Engine noise, usually a sharp metallic sound or a wind-like noise; 2. Transmission noise, where there is a "rustling" sound inside the transmission, which disappears when the clutch or accelerator is pressed, and a whistling-like sound when shifting gears; 3. Wear-related noise, where there are some minor noises from certain parts of the car body when pressing the accelerator or brake, which do not affect normal driving. Engine noise indicates a change in the technical state of a certain engine component. Transmission noise is mainly caused by excessive wear of parts or improper assembly and adjustment. Changing speed and direction is particularly important for determining rear axle faults. Door noise is mainly due to lack of lubrication.
My car's transmission is making strange noises when shifting gears, sounding like rattling or clunking. There could be several common causes: the transmission fluid level is too low or the fluid is dirty, leading to insufficient lubrication and friction noises; gear wear or synchronizer damage, especially common in manual transmissions; or issues with the valve body or hydraulic system in automatic transmissions can also cause similar noises. If not addressed promptly, these noises may worsen internal wear, eventually leading to complete transmission failure, which comes with costly repairs. I recommend starting with simple steps, such as checking whether the fluid is at the normal level and ensuring there are no leaks. If the fluid is fine, then it's best to take it to a professional repair shop for a thorough inspection. Don’t ignore these warning signs to avoid minor issues turning into major repairs. Regular maintenance is key—changing the fluid every two years can significantly reduce the risk of such noises occurring.
