[Midgear]

ive gone through two powersteering pumps in less than 6 months.. the stock one was fine.. only reason i replaced it is because i thought the damn thing was whining, but it wasnt.. it was an idler pully which was about 8 bucks at auto zone.. and the "new" one i had made the screeching noise you're talking about then it started throwing fluid all over the engine bay, so i got another one.. and now THIS "new" one makes a metal on metal sound at WOT in lower RPM's, and it whines very loud when turning back and forth sitting in one spot at idle or traveling below 5 mph.. so hell if i know. lifetime warrantee so if it craps out i just go up there and grab a new one. pretty easy to install too.

EDIT: yes, its full of fluid, the fluid is clean, and i followed instructions on removing air out of the newly installed pump.. do they make certain brands, or just oem replacements, because the ones from O'reillys suck.