Y axis slamming to a halt

Just wondering if anyone else has ever encountered this problem. When traveling rapidly in the Y plus direction, it will sometimes slam to a stop and make a loud whining noise. Then if I continue to move slowly in the Y plus from the stalled position it doesn’t go all the way to the limits. Which I figured out is because it loses its Y position and thinks it’s already at its limit.
Any advice would be helpful. Thanks

Lose wire or connector. Remove the top gantry and jog back and forth. It is possible that left or right side is being moved by the other side and not on its own

Thank you. I’ll try that