A YJ has a non-optimal steering linkage design. At 4" lift, the drag link is at quite a steep angle. The tie rod will roll before the drag link will actually begin to move the tie rod enough to steer the wheels. That problem is felt much more noticeably with tall lift. A drop pitman arm can help but it never fully solves the problem.
also if you have taller than stock shackles, they will make the steering feel loose and like it wanders a lot.
