Do you mean pushing the steering wheel side-to-side, or turning it? If it's side-to-side, there is likely one of the pins for the tilt wheel sheared off. There's a special tool to pull them out and they are replaceable. If there's play in the steering wheel when you turn it, that's normal when there's no pressurized power steering fluid pushing on the power piston in the steering gear box. That play will go away when the engine is running.
Other causes of excessive play in the wheel when the engine is running include tie rod ends, ball joints, idler arm, and pitman arm. All of their ball and socket joints should be inspected for movement while a helper moves the steering wheel back and forth rapidly about a quarter turn. If the new lower ball joints are moving, suspect the mounting hole is stretched and letting the entire joint move around. In very rare cases there can be sideways movement in the pitman shaft where it comes out of the steering gear box. I can describe how to check that if necessary, but on your car that's not very common.
Installing coil springs in the rear to eliminate the troublesome air ride system is a real common procedure. As long as the ride height is correct, there should be no problem aligning the car.
Wednesday, August 10th, 2011 AT 10:59 PM