My 1992 Legacy has an intermittent issue where under moderate to heavy acceleration the steering wheel will freeze up when trying to steer unless I let off. The resivoir is full and the belt doesn’t squeak. Any help would be appreciated.

I had the same problem with my '91 years back. I replaced the P/S pump with one from a yard, and that fixed the problem.

I’ll take at look at doing that, anything else?

hmmm... slipping belt OR, sometimes on older cars, the outer ring of the crank pulley separates from the inner part's rubber. See if it's wobbling any when idling.

Well the pump has started making noise the last day or two, have to wait for a day off to go to the junkyard for a new one.