WRX Power steering problem
I have problems with the power steering on my 2003 WRX sportswagon. First, the belt shed part of itself so I replaced it. Next the pump started making grumbling and whining noises and the steering became erratic (sometimes it had power and then not). I had the stering pump removed refurbished, but the fault remained. Lastly I have had the rack removed and refurbished and, you guessed it, the problem is still there. The steering works sometimes, particulary if I keep the revs up, but for no apparent reason it will loss power (usually when I try to turn a corner).
Does anyone have any suggestions as I'm tearing my hair out on this one, not to mention getting considerably poorer.
Thanks in advance