Reasons for Frequent Gear Grinding Noise When Shifting from Second to Third Gear

2 Answers
Gary
07/29/25 2:48am
There are many reasons for gear grinding noise, which are analyzed in detail as follows: 1. Driving issue: The clutch is not fully depressed or is released too early when shifting gears. In this case, it is important to ensure the clutch is fully depressed before shifting. 2. Transmission failure: Caused by high temperatures, prolonged high-load driving can lead to excessive temperature inside the transmission, damaging the quality and friction performance of the transmission oil. Additional information is as follows: 1. When downshifting, reduce the vehicle speed to a certain level, first release the accelerator pedal while simultaneously depressing the clutch pedal, shift the gear lever from a higher gear to neutral, then release the clutch pedal and add a bit of "neutral throttle." 2. The principle of downshifting with neutral throttle is: higher vehicle speed requires more "neutral throttle," lower vehicle speed requires less "neutral throttle," low engine speed requires more "neutral throttle," high engine speed requires less "neutral throttle," and flat roads require more "neutral throttle."
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JaxsonAnn
08/12/25 6:42am
I've been driving manual transmission cars for a while, and this issue of gear grinding when shifting from second to third gear is quite common. It's mainly caused by worn or damaged synchronizers. Synchronizers help match the gear speeds during shifting. If you frequently shift too quickly or don't fully depress the clutch, they can wear out easily. There might also be issues with the clutch system, such as insufficient hydraulic pressure or worn clutch discs, leading to rough power transfer. Over time, dirty or low transmission fluid can accelerate wear. I recommend taking it slower during shifts, making sure to fully depress the clutch, and checking if the transmission fluid needs changing. If the noise persists, get it checked by a professional shop as soon as possible to avoid minor issues turning into major repairs. Long-term neglect could damage the entire transmission, and safe driving is crucial.
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