Why does it make noise when shifting gears?

[FaithFitz]

The reasons for noise when shifting gears: 1. The clutch pedal is not fully depressed; 2. Loose linkage mechanism; 3. Severely worn clutch disc or damaged pressure plate. The noise during gear shifting occurs due to gear friction during the process. Since reverse gears don't have synchronizers, this issue is quite common and usually doesn't require repair. When abnormal noises occur during gear shifting, you need to identify the source by listening carefully. If the sound is relatively small and comes from near the gear lever, it's likely caused by the shifting mechanism. If there's a clunking sound during shifting, it's usually due to gear impact issues in the transmission. Improper transmission assembly, incorrect replacement of certain gears or needle bearings/bushings, or abnormal assembly clearance can all cause poor gear meshing and result in abnormal noises during operation.

[OKhloe]

After driving for so many years, the most common reason for noise when shifting gears is not fully depressing the clutch pedal, which causes the gears to collide and make sounds when not completely engaged. Another cause could be worn synchronizers, which are responsible for matching gear speeds—when they age, they produce creaking noises during gear shifts. Insufficient or dirty transmission fluid can also increase friction noise due to poor lubrication. In daily driving, I recommend ensuring smooth shifting actions and fully depressing the clutch pedal each time. If the noise occurs frequently, it's best to have it checked at a professional shop to prevent minor issues from turning into major repairs, such as bearing failure or gear damage, which can be quite costly to fix.

[DelLola]

When shifting gears, the noise is mainly due to mechanical component issues. If the clutch is not fully disengaged, the gears collide directly, causing noise. Worn synchronizers fail to smoothly match the rotational speeds, resulting in a harsh sound. Insufficient or contaminated transmission fluid is another common factor, as poor lubrication increases friction. Wear in the drivetrain components, such as the axle or differential, can also transmit noise. In daily driving, I make it a habit to shift gears more slowly and gently to minimize such issues. Regular maintenance is key—changing the transmission fluid every two to three years and inspecting the clutch system helps maintain overall health.

[DiBrantley]

Gear grinding noise usually occurs when the clutch isn't fully depressed, causing gear collision. Worn synchronizers or insufficient transmission oil can also cause noise. When driving, ensure the clutch is fully pressed and operate slowly. If the noise persists, visit a repair shop to check fluids or components. Maintaining good habits can prevent damage.