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Mini cooper R50 Auto Gearbox jerking
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<blockquote data-quote="tweiboon" data-source="post: 750127" data-attributes="member: 4590"><p>Jerking cause by solenoid not happening in CVT. in CVT only has 1 Stepper Solenoid to control the CVT to change Ratio and Secondary Pressure Solenoid to control clutch. In normal gearbox, it has multiple solenoid to control gear changing. In CVT, change Secondary Pressure Solenoid will not solve the problem due to the 3 clutch plates worn. It needs more pressure to press more in order to stick the clutches with the gearbox shaft to turn. Worn clutch plates causing slip while it turning and causing high jerking. The jerking facing by this Punch CVT is very horrible. Once you knew for sure you will never use such a CVT anymore.</p></blockquote><p></p>
[QUOTE="tweiboon, post: 750127, member: 4590"] Jerking cause by solenoid not happening in CVT. in CVT only has 1 Stepper Solenoid to control the CVT to change Ratio and Secondary Pressure Solenoid to control clutch. In normal gearbox, it has multiple solenoid to control gear changing. In CVT, change Secondary Pressure Solenoid will not solve the problem due to the 3 clutch plates worn. It needs more pressure to press more in order to stick the clutches with the gearbox shaft to turn. Worn clutch plates causing slip while it turning and causing high jerking. The jerking facing by this Punch CVT is very horrible. Once you knew for sure you will never use such a CVT anymore. [/QUOTE]
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