NOT KNOWN DETAILS ABOUT GEARBOX CVT PROTON

Q. Once the car relates to a end (throughout the decelerate/deceleration), I am able to hear an exceptionally apparent humming audio. If i change to neutral, this sound will disappear promptly. The noise is also obvious if the automobile is downhill with motor braking.A. Rubberband influence is from CVT's that existed 30 decades ago, we make use of