What is the troubleshooting method for transmission abnormal noise?
2 Answers
Troubleshooting methods for transmission abnormal noise are: 1. When stepping on the clutch pedal and hearing a metallic friction sound, observe the removed flywheel housing. If there are burn marks or sparks at the contact point between the clutch release bearing and the release lever, it indicates that the clutch release bearing is not rotating or is damaged; 2. When the engine is idling and there is a clattering sound from the clutch, lightly pressing the accelerator does not change the noise, which is caused by a broken release lever screw; 3. When the engine is idling and there is a knocking sound from the clutch, with the engine turned off, engage the transmission, step on the clutch pedal, and use a screwdriver to check for any gaps in the driven plate groove.
Transmission noise can be quite annoying, but troubleshooting methods can be attempted yourself. I often deal with similar issues: first, park and check the transmission fluid level, open the hood to locate the dipstick, and see if it's insufficient or too dirty; if the fluid is low or black, replace it with new oil. Next, try driving for a while and listen to where the noise is coming from: noise in neutral could indicate worn bearings or shafts; noise during gear shifts might point to issues with gears or synchronizers; continuous noise while driving could suggest internal component damage. If you can't resolve it yourself, promptly take it to a professional repair shop where they can use diagnostic tools for a more accurate check. Delaying repairs can accelerate transmission failure, making repairs more expensive. Regular maintenance should include adhering to oil change intervals and not exceeding them.
