Hey guys over the weekend I replaced my failing power steering pump on my 2004 gt 5 speed. The pump I installed is a remanufactured part from autozone. When I put it on I drained the fluid from the system, replaced it with merc 5 ATF and turned the wheels lock to lock to get all of the air out of the lines. I used a hand operated vacuum pump to encourage some of the air to come out. When I started the car up (still on the jack stands) the pump started whining like it still had air running through it. Whenever I pushed the brake is made a scraping noise like it was causing strain on the pump. When I turned it off and tried to work air out of the system again, I noticed that moving the wheel would cause the level of fluid in the reserve rose, and the hand pump was no longer pulling a vacuum (I could hear air bubbling through the lines). The odd thing about this air coming in to the lines is that no fluid is leaking out anywhere, and whenever I start the car the fluid drops to a normal level. I think there might be a problem with the hydro boost system but I'm not sure. Any ideas?