sounds like steering u/j is siezed on one of the "yoke" bearings, sometimes you can oil them and they free-off. if you inspect u/js you may see tell tale signs of rust around one of bearings,this will be the faulty one!
k, March 2009
Check the power steering fluid reservoir for LOW FLUID LEVEL you could have a LEAK on the steering rack rams can collect in either side boot rubbers not on the floor .