Q: Transmission making grinding noise when downshifting

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The transmission is making a clicking/grinding noise when the car is downshifting.

If your vehicle is a standard, you can have a bad synchronizer in your transmission. The synchronizers are typically made of brass and are what make shifting from one gear to the other smooth. When they wear they make shifting a bit harder and that is when you hear the grinding sound as you shift. Repair requires removal of the transmission and disassembly. This is something that I suggest be done by a qualified mechanic to pinpoint the grinding sound in your transmission.

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