Steering not centering

[chefyong]

I noticed that the steering wheel after making a turn does not center right away. You need to ***ist the steering to center up. Checked power steering fluid and belt, both are okay. Any ideas?

Thanks

'92 Saab 16v Turbo

[boostpowered]

check rod ends both inner and outer check ball joints and controll arm bushings many things can cause steering and drivability problems if the rod ends are bad and you continue to drive with this issue it can cause wheel bearings to go bad