96 Jeep Cherokee 4.0/automatic, 167,000 miles, ran great.....went to crank it this morning. Acted like it didnt' want to fire at all. I didn't notice the pump humming like it noramally does. So, I took off the rubber hose from the sending unit to the filter, turned the switch and got nothing. I am going to go out on a ledge here and say fuel pump.....but it gave NO warning sign what-so-ever......is that normal? Any other ideas?