My PS pump was making a lot of noise and the rack was leaking a bit so I bought a new rack and a re-manufactured pump (w/o reservoir) and had a shop install them for me. The next morning when I started my truck the new pump was still vibrating and making that whining sound. However, when I drove for 5 mins or so till the truck was warm I would turn the truck off and back on and the noise/vibration was gone. It got worse, however, to the point where the vibrating/noise was constant and eventually the fluid was bubbling out of the reservoir and the power steering failed all together. Thinking it was a faulty re-mannied pump I had another one installed only to do the same thing. So I thought it could be the filter on the reservoir so I took a long brush and tried to clean the filter. This caused the noise to go away. But the fluid was brown not red so I sucked the fluid out of the reservoir and replaced it, and now the SP sounds even worse and vibrates like crazy, and it's harder to steer. I don't understand what is wrong with the system, has anyone had this kind of problem? Any suggestions?