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Grinding Noise when Shifting

When shifting into one particular forward gear grinding noise occurs. However, the grinding sound is not heard when shifting into reverse gear.

Possible cause of grinding noise when shifting

The transmission gear synchronizer is defective
If the grinding noise happens only when shifting into a forward gear then it is most likely a problem on the component of the affected gear which is the synchronizer. The synchronizer is a transmission component that brings the rotating shaft or gears together at the same speed when the car is running, the purpose of this is to smoother the shifting.

Now, if the synchronizer is defective there is a grinding sound that can be heard every time the transmission is shifted into the forward gear. When the defect of the synchronizer is severe the transmission is hard to shift or even worst then shifting to another gear will become impossible.

Manual Transmission Hard to Shift Into First Gear
From a stop, the manual transmission hard to shift into first gear, but no grinding sound is heard. If this problem happens to you it only indicates a severely misadjusted clutch linkage.

Read more: Manual Transmission Hard to Shift Into First Gear

There is too much free play on the clutch pedal
If for instance, the shifting problem occurs during shifting from a stop going into the first gear, it is most likely that the cause is related to the clutch pedal free play. Clutch pedal free play is the movement of the clutch pedal just before the clutch starts to disengage.

When there is too much clutch pedal free play it can cause for the clutch not to be fully disengaged when shifting into first gear coming from a stop even when the pedal is fully depressed, if this happened there will be a grinding sound heard coming from the transmission every time the gear is shifted.

Problem with the transmission is not an easy job it should be handled by a mechanic that is specialized in transmission repair, therefore the only option you have is to bring the car to a reputable car shop that is expert when it comes to transmission repair.

Since the problem happened only when the shifting is done from stop going into the first gear the mechanic may only need to adjust the clutch pedal free play, or sometimes the mechanic will recommend opening the transmission, in this case, do not always agree with the mechanic recommendation seek first for a second opinion coming from another shop, if the other shop also recommend that the transmission is necessary to tear down then that is the time to agree for the transmission overhauling.

1 comment:

  1. My transmission wont kick into gear until i reach 2500 rpms, let off gas, then it trys to kick in. what causes this?


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