Buick Regal

I have a 1998 Buick Regal LS with 113500 miles on it. It has an automatic transmission with front wheel drive. I made a hard right turn to back out of a cul de sac. I then had an immediate problem with the power steering not working when the wheel was turned to the left. I checked the fluid and I did add some, but. Turning the wheel right and left to bleed possible air bubbles hasn't worked. Could I have I put the steering wheel position sensor out of alignment? I don't want to remove the pump or the steering rack just to go on an expensive fishing expedition to find the problem.
September 7, 2007.

When you hold a steering wheel at the stop, for too long, wich at the high pressure involved, seals take a beating quickly, check your pump first, they seem to get ruined before outlying parts.

Sep 7, 2007.