[GTLEGEND]

Yes the pump is always running when the engine is operating as this is what gives the lighter feeling in your steering all the time, otherwise the steering will be rock hard when in straight position.

If that is the case, I suspect the drive belt is over tensioned. I would wait a couple of weeks and if the noise is still there, have somebody release some tension in the belt. What tends to happen is a new belt will stretch when put on, so you have to put it on with slightly more tension than normal so the belt does not come loose when it stretches. If its too too tight you are putting too much tension on the pump and other bearings and will need to be backed off slightly. If you put it on normal tension when it stretches it will come loose and slip. So getting the right balance is hard. Once stretched it will normally settle and not stretch any further. if you keep it too tight for too long you can damage the bearing in the pump..