power steering

Air bubbles. Turn wheel slowly lock-to-lock a couple of times to purge air. If no good re- inspect your o-ring service, as it sounds like it's still cavitating air.

it was the o ring. sucked it up and spent the cash on a oem. works like butter now.

The OE o-ring is a bit small, so after a few years it deforms into a triangular-crosssection that allows cavitation. A slightly thicker o-ring from a hardware store works better. You want a snug enough fit to overcome the stupid singular offset mounting bolt.