The alignment would not cause the car to shift from left to right at high speed. You may have bad inner or outer tie rod ends, a loose rack, loose steering coulomb, loose steering wheel. The noise is probably related to all the above or dried out top or bottom ball joints. Some thing is bad and may cause you to loose control of the car get it looked at as soon as possible.


A bad alignment can cause a pull left or right but not both at the same time it also causes your tires to wear out faster. Thats about it mines bad handling.