What Causes the Grinding Noise When Shifting Gears Without Fully Depressing the Clutch?
1 Answers
It is due to gear grinding. Here is the relevant information: Gear Grinding: Transmission gear grinding essentially refers to the direct metal-on-metal contact between two gears. The outcome is quite obvious—it accelerates the wear on the gear teeth. Over time and with repeated occurrences, the originally right-angled gear teeth become rounded, leading to incomplete engagement after shifting. Even slight vibrations can easily cause the gear to pop out, at which point a major transmission overhaul is required. Cause: Transmission gear grinding is a result of operational errors that damage the transmission gears. For manual transmissions, it is generally required to fully depress the clutch before performing a gear shift. Once the vehicle speed and engine speed are synchronized, the clutch can be released to complete the shift.