The new Sylphy transmission has a common issue of transmission noise, especially in the 1.6L Yixuan CVT transmission after 12 years, which has become a prevalent problem.
If the noise from the new Sylphy transmission matches these phenomena, the issue may lie in the small bearing at the rear end of the transmission input shaft. Despite its small size, this bearing must endure substantial loads over time, leading to overload.
Additionally, failure to change the transmission fluid in a timely manner can also result in bearing damage. Generally, the first signs of bearing damage include a buzzing sound, particularly noticeable during cold starts. If repaired promptly, it may only require replacing the small bearing, filter, and transmission fluid, keeping repair costs relatively low.
However, if noise increases during driving, it may indicate that the bearing has fallen off and the input shaft teeth may have also been worn. As shown in the image, fallen bearings generate a significant amount of metal particles and powder, leading to the oil pump adjustment valve getting stuck, causing abnormal pressure control, which in turn results in belt wear and transmission slippage.
In such cases, repairs may necessitate discarding several internal components of the transmission, significantly increasing repair costs. Therefore, when abnormal transmission behavior occurs, do not continue driving; instead, contact a professional transmission repair center immediately to avoid greater economic loss due to minor issues.
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