What Causes Jerking in CVT Transmissions?

[OAnderson]

Here are the reasons for jerking in CVT transmissions: 1. Insufficient Lubrication: A common cause of jerking in CVT transmissions is gear-shift jerking during cold starts. Since most mainstream CVT transmissions require fluid, insufficient lubrication during cold starts can lead to poor chain connections. When the clutch engages during a cold start, it is prone to impact, causing gear-shift jerking. This issue can be avoided by warming up the car and ensuring the brake is firmly pressed during gear shifts to allow smooth clutch engagement. 2. Design and Quality Issues: Design and quality problems can also frequently cause shaking in CVT transmissions. A typical example involves a certain Japanese brand. The CVT failures in this brand are mainly due to poor torque converter design (connecting the transmission body to the engine), leading to gear-shift impacts that can occur at any speed. Additionally, subpar quality, excessive chain wear beyond normal levels, and a large amount of metal shavings accumulating in the oil pan can also cause shaking in CVT transmissions, though severe jerking is unlikely.