Why does the QINGLING ISUZU 100P gearbox make abnormal noises?

[Frank]

1. The engine makes abnormal noises. There are many possible reasons for abnormal noises in the engine compartment. Most people determine the source of the noise based on the sound, which is usually a sharp metallic sound or a wind-like noise. 2. The gearbox makes abnormal noises. If there is a "rustling" sound inside the gearbox while driving, but it disappears when the clutch or accelerator is pressed, and a whistling-like sound occurs during gear shifting. 3. Wear causes abnormal noises. When pressing the accelerator or brake while driving, there are always some abnormal noises from certain parts of the car body. The sound is not loud and does not affect normal driving.