Hello all, i am working on a buddies car, its a 1990. he just bought it, and the guy he got it from said it needed a power steering pump. He brought the car to me and a new pump and i replaced it as well as the pressure hose. No change, no power steering what so ever. We then ordered a reman rack, it showed up and i replaced it. and still nothing, after some diag, i thought it was the pps system at fault, so we then got a rack for an 87 without pps. Just got it installed today, and still nothing!! Everytime i bleed the system and filled it with dextron III. I then took a pump off another buddies car that is at my place too, a supposedly a good pump, i cant verify positively, but he said it worked when the car was parked. I bled the crap out of it this last time and still absolutely nothing. Fluid level was rising and falling around .5" or so. couldnt get any more air out. i then took the return line off the res and had someone start the car, imediatly blew fluid out, emptied the res. filled up and did it a couple times and it got to where it wasnt pumping anything out of the return line. unless you turned the wheel and then it wasnt much. Im at a loss. Has one new pump, one supposedly good pump and 2 reman racks, and i have never felt a difference after any of this. I can only assume the rack or the pumps are at fault but it just seems so unlikely. and advice or tips would be great.