The Honda Fit's transmission operates by utilizing larger gear ratios at low speeds and smaller gear ratios at high speeds. This mechanical transmission primarily employs the principle of gear reduction.
Common causes of transmission failure include:
A metallic friction sound from the transmission usually indicates low oil levels or poor oil quality. It is advisable to add oil and check its quality, replacing it if necessary;
If there is a noticeable noise when engaging a specific gear while driving, it may indicate wear on the gear teeth; if the noise is periodic, it could be a sign of damaged individual teeth;
If noise is present in neutral and disappears when the clutch pedal is pressed, this usually indicates noise from the front or rear bearings or constant mesh gears; if noise occurs in any gear, it is likely from the rear bearing of the second shaft;
A sudden banging sound while the transmission is working may indicate broken gear teeth, and immediate inspection of the transmission cover is necessary to prevent further damage;
If noise occurs only when shifting into a specific gear while everything else seems fine, the engagement gears should be checked for proper pairing, and new gears should be installed if necessary;
Noise during gear shifts may stem from the inability of the clutch to disengage, incorrect clutch pedal travel, damaged synchronizers, high idle speed, improper gear lever adjustment, or tight guide bushings. In such cases, first check if the clutch can disengage, then adjust the idle speed or gear lever position, and inspect the fit between the guide bush and the release bearing.
