i have a 1988 dodge ramcharger4x4 i replaced uper and lower ball joints tierod ends center link all leaf spring bushings but i can be driveing on the road at 50mph if it starts to the left or right when you correct it say if it is going to right and you turn wheel to left to correct it starts to move then it will shoot you into the other lane if you dont watch. and it is the same the other way to what will cause this the alightment is good.