Why Does the SAIC Volkswagen Lamando Transmission Make Abnormal Noises?
2 Answers
Below are the main reasons for abnormal noises in the Volkswagen Lamando transmission: 1. Poor fuel quality when the engine burns oil, leading to fuel impurities. 2. Aging of the valve oil seal and front/rear crankshaft oil seals, reducing flexibility. 3. Clogging of the air filter and oil filter. 4. Dirty throttle valve causing blockage. Here are the solutions for abnormal noises in the Volkswagen Lamando transmission: 1. If there is a friction sound while driving, it is usually due to insufficient or deteriorated lubricating oil. Add oil or check the oil quality, and replace if necessary. 2. If the transmission makes abnormal noises in neutral gear but stops when the clutch pedal is pressed, it is often due to wear or looseness of the front and rear bearings of the transmission's first shaft or the constant-mesh gears. If the noise occurs in all gears, it is likely the rear bearing of the second shaft. Severely worn or damaged bearings should be repaired or replaced. 3. If the transmission makes abnormal noises during low-speed driving, producing irregular clattering sounds that turn into chaotic gear impacts at higher speeds and also occur when shifting gears, it may be due to poor gear meshing in the transmission. If the noise is slight and uniform, continue running-in; if severe and uneven, disassemble for inspection and adjust or replace as needed. 4. If the transmission makes rhythmic clattering sounds during engine idle, worsening when the throttle is increased and accompanied by vibrations, it is usually caused by tooth surface peeling or broken gear teeth. Misalignment during repair or assembly can also cause this noise. In such cases, disassemble for inspection and replace parts if necessary. 5. If a dull, irregular noise occurs in a specific gear while driving and disappears when the gear lever is held, it may be due to wear in the gear shift fork groove or the lower end of the gear lever. Disassemble for inspection, repair, or replace. 6. If a noticeable noise occurs after shifting into a specific gear, it indicates excessive wear of that gear's teeth. Periodic noises suggest individual tooth damage. Sudden impact sounds during shifting may indicate broken teeth. Promptly disassemble the transmission for inspection, repair, or replacement.
Having studied cars for many years, I've noticed that transmission noise in the Volkswagen Lamando is quite common, mainly due to internal component wear, insufficient lubrication, or external looseness. For example, when gears or bearings age, the friction noise during operation increases. Oil-related issues are also frequent – insufficient oil level or degraded oil leads to poor lubrication, causing metal scraping sounds. Driving habits matter too, as consistently driving at low speeds in high gears or sudden acceleration can increase the load. External components like brackets or casings becoming loose may also cause rattling noises. The most frustrating part is that ignoring these noises might lead to bigger failures, resulting in extremely expensive repairs. Therefore, it's crucial to check oil levels and quality early, and visit a 4S shop when necessary. They can provide professional diagnostics to prevent minor issues from escalating into major problems.
