Why is my Suzuki Cultus making a grinding noise when shifting gears?

Grinding noises when shifting gears are a clear indication that there’s a mechanical issue with the transmission. This issue can happen in both manual and automatic transmissions.

Common Causes:

Worn o r Damaged Synchronizer Rings Manual Transmission: In manual transmissions, synchronizer rings help the gears mesh smoothly. When these rings are worn out o r damaged, the gears will not align properly, causing a grinding noise.
Low o r Contaminated Transmission Fluid: Low o r dirty transmission fluid can prevent proper lubrication, leading to friction and grinding noises when shifting gears.
Worn Clutch Manual Transmission: If the clutch is not fully disengaging when you shift, the gears can grind due to insufficient separation between the clutch and the flywheel.
Misaligned o r Damaged Gear Teeth: Damaged o r misaligned gears within the transmission can lead to grinding noises, particularly when shifting into certain gears.
Faulty Transmission Bearings: Worn bearings within the transmission can also cause grinding noises as they may not properly support the gears.
How to Fix:

Replace Synchronizer Rings Manual Transmission: If the synchronizer rings are worn out, they will need to be replaced to restore smooth shifting.
Check and Replace Transmission Fluid: Check the fluid levels and condition, and replace it if it’s low o r contaminated. Clean fluid will reduce friction and prevent grinding.
Inspect the Clutch Manual Transmission: If the clutch is worn o r not fully disengaging, it will need to be repaired o r replaced. A mechanic can inspect the system for proper operation.
Check for Gear Teeth Damage: If the gears are misaligned o r damaged, they will need to be repaired o r replaced.
Inspect Bearings: Worn transmission bearings will need to be replaced to eliminate the grinding noise.
What to Do:
Check and replace transmission fluid first. If the grinding persists, inspect the synchronizer rings, clutch, and internal gears.