When I engage the ap after take off the yaw damper goes crazy and I took off turbulence. When I am in the vc it goes crazy when I turn of the yaw damper it stops and when I am out Side the plane with the yaw damper on it stops also it stops when I am in the 2d. It only happens in the vc.

What do you mean by "the yaw damper goes crazy"? Need a little more info here.

when i am flying and the yaw damper is on it starts moving left and right when i am not even making a turn. when i turn it off everything is fine and this only happens in the vc to which is weird. it moves left and right very quickly