This is for the w201. After I disconnected the upper hose tho the ps pump to drain it so I have access to another part, I refilled it, but now I have no power steering. Set both fronts up off ground car on/engine off and turned wheel from lock to lock to try to get out any air. Still nothing. I then opened up the pump to see if there was anything internally wrong and all looks fine. Anyone know what could be the problem? When the wheels are off the ground they turn fine, but when driving it is very difficult to turn.

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1990 190E 3.0L