Hi, thinking more about this I've come up with a little more for you...
Is the pump making any noises at all?
If it's NOT making a whining noise it should be GOOD...if it's got a whining sound to it that's a sign it's bad.
Also, are you getting ANY power steering out of it at all, or no? Does it feel like you're getting some assist but not the normal amount?
OR does it work sometimes and then not others? Kind of like an "on again off again" scenario? If that's the case, erratic operation would normally be caused by dirt in the system (or even just rust/sediment that builds up over time) and having that work it's way into the Spool Valve.
The spool valve can need to be cleaned (it's located on the steering rack where the steering column connects to the rack).
Have you been driving this car around, and if so has it gotten any better over time? If there was just some air trapped in the system somewhere it will normally work it's out over a short amount of time, say 2 or 3 days (depending on how far you drive it), so you could try just driving it for a little and see if maybe that's all that happened, and it could get better!?
>> Stay informed about: Power steering issues.