What is the reason for the gear noise when stepping on the brake?
3 Answers
The reasons for gear noise when stepping on the brake are: 1. The fixing screws of the brake disc are missing or damaged; 2. The brake system has malfunctioned. The car gears include: 1. R for reverse gear: simply press the unlock button on the gear lever without stepping on the brake pedal; 2. D for drive gear: the automatic transmission first selects first gear to start the vehicle, then gradually shifts up to second, third, and even fourth gear based on signals such as throttle opening and vehicle speed; 3. P for parking gear: when the gear lever is in this position, the drive wheels are mechanically locked, and the engine can be started; 4. N for neutral gear: when the gear lever is in this position, the transmission idles and the engine power cannot be transmitted to the drive wheels.
Recently, I also encountered the issue of gear noise when stepping on the brakes while driving. Upon reflection, there might be several reasons. For manual transmission cars, it could be due to a loose or severely worn gear shift mechanism, where problems with clutch linkage when braking cause a clicking sound. For automatic transmissions, if the gear locking device is aged and not operating smoothly, it can easily produce noise. The brake system itself, such as worn brake pads or deformed discs, can transmit vibrations to the transmission, also causing noise. Loose transmission components like the half-shaft or inaccurate P-gear positioning might also be culprits. I recommend starting with the simpler checks first, such as inspecting the quality of the transmission fluid and the condition of the brake pads, because neglecting small issues could potentially damage the transmission. Safe driving is crucial, so don’t ignore this warning sound—getting it repaired promptly could save you a lot of money.
Last week, my manual transmission car suddenly made strange noises when I stepped on the brake, which really startled me. After checking online, I found that similar issues are often caused by worn internal parts of the gear shift lever, such as misaligned synchronizers causing a clunking sound under heavy braking pressure. It could also be due to vibrations from the brake booster affecting the gear position. A friend of mine had the same problem, and the mechanic said it was caused by a worn clutch plate causing vibrations. Avoiding sudden braking in daily driving can extend the lifespan of these components—after all, it's better to take care of a new car than to repair it. Don't ignore even minor noises; addressing them early can save you from costly and time-consuming major repairs.
