What Causes the Abnormal Noise When Starting in First Gear?

[LePaislee]

Abnormal noise when starting in first gear is usually caused by tooth surface detachment, broken or fallen gear teeth, or misaligned gear installation. In such cases, it is essential to inspect promptly and replace parts if necessary. While driving, the transmission may also produce a dull, irregular noise. The reasons for abnormal brake noise without pressing the brake pedal are as follows: 1. Use of low-quality or overly hard brake pads: If inferior or excessively hard brake pads are used, they may produce a squeaking noise when rubbing against the brake disc during braking. Therefore, always use high-quality brake pads when replacing them. 2. Presence of sand or foreign objects between the brake pad and brake disc: During normal driving, it is inevitable to encounter complex road conditions. Due to the unique design of disc brakes, sand or foreign objects may get lodged between the brake pad and brake disc, leading to abnormal noise during braking.