I dunno because that is the only thing that makes noise when the car is stationary. I can bounce it up and down hard as hell and it doesn;t make a noise.... but when I jerk the steering wheel, I hear the same sound that I hear when I'm driving and go over bumps etc.
With that said, I think the only thing bad is the rack.
I've had the front end up and grasped the wheels real good and pulled them side to side and top to bottom to see if there were bad ball joints and there was no play in the wheel so the ball joints seem fine.
What's got me confused and I could be wrong... but I didn't think the steering rack would have any effect on the ride as far as wobbling etc is concerned.
Some times when I hit a good bump though it sounds like my front end is going to just fall off and that can only be attributed to the rack... same sound as when I jerk the wheel just much louder when I'm in motion and hit something.