What are the causes of a rattling sound in the transmission?
2 Answers
The causes of a rattling sound in the transmission are: 1. Piston knocking or piston pin breakage; 2. Loose connecting rod bearings; 3. Piston ring leakage. Methods to identify transmission abnormal sounds include: 1. If a dry metal friction sound is heard inside the transmission, it indicates insufficient or deteriorated/diluted lubricating oil; 2. If the abnormal sound is rhythmic and becomes louder when accelerating, it may be caused by gear debris or misalignment during repair/installation; 3. If abnormal sounds occur due to increased friction of internal components, it suggests the use of inferior transmission fluid; 4. If vibration occurs during driving, it may indicate loose transmission housing bolts; 5. If a water sloshing sound is heard while driving, it means water has entered the transmission without timely repair; 6. If metal collision sounds occur during driving, it indicates gear tooth surface peeling, tooth breakage, or assembly misalignment.
When I drive, there's a clicking sound from the transmission, usually due to clutch wear or loose shifting mechanism. The noise sounds like parts knocking against each other, which is quite annoying. There could be several reasons, such as old and dirty transmission fluid losing its lubricating properties, or gaps in the shift linkage mechanism. For a simple self-check, you can inspect the fluid level; if there's leakage, handle it with extra caution. Additionally, if you frequently shift gears in city traffic jams, the clutch plates can easily overheat and wear out, producing this kind of noise. It's advisable not to delay—take it to a repair shop for a professional inspection. Otherwise, it might damage the entire transmission, leading to more expensive repairs.
