The 2.3 DOHC Quad 4 is a good engine until something goes wrong, and usually its a head gasket, or a water pump going out causing the head gasket to get cooked.. Always hated working on the Quad 4.. Care for it, never let it get hot and it will last a long time..
As for the Load Level system.... Do you have the Inflator station on the rear drivers side?
Finally if you do have that Option, the pump should sound like this...
