One rubber line is leaking. It is the one that goes from the pump down under the alternator then turns into a rubber hose and     then has a damn sensor in it?  It is located next to the brake booster sorta/ above the rack and pinion near the tranny dip stick tube. 
Why does a power steering hose have a sensor in it?  
I followed it to make sure it was a power steering hose and it was.  
can i replace this hose? 
thanks
 
 
yes you just need to buy a new hose.  Napa has them.  The sensor cuts off the AC when the car is idle and you turn the wheel all the way to one side.