Here are the specific reasons for transmission failure in Geely Emgrand: 1. If the transmission emits a dry metal friction sound, it indicates insufficient oil or poor oil quality. Refill oil and check its quality, replacing if necessary; 2. If a noticeable noise occurs when shifting into a certain gear while driving, it suggests wear on the gear teeth of that gear. Periodic noise indicates damage to individual teeth; 3. Noise in neutral that disappears when the clutch pedal is depressed usually points to issues with the front or rear bearings of the primary shaft or the constant mesh gear. If noise occurs in all gears, it is likely due to the rear bearing of the secondary shaft; 4. Sudden impact sounds during transmission operation often indicate broken gear teeth. The transmission cover should be promptly removed for inspection to prevent further component damage; 5. If noise only occurs when shifting into a certain gear while driving, check whether the meshing gears are improperly matched after confirming other components are intact. Reassembling a new pair of gears may be necessary; 6. If gear collision noises occur during shifting, possible causes include non-separation of the clutch, incorrect clutch pedal travel, damaged synchronizer, excessive idle speed, improper gear lever adjustment, or tight guide bushing. In such cases, first check if the clutch can separate, then adjust the idle speed or gear lever position, and inspect the tightness between the guide bushing and the release bearing.
