I started my Ford F150 this morning, it started fine. Then while it was warming up, it died. I went to restart it and it wouldn't start. It acked like it wanted to turn over, but it wouldn't go all the way. Could this be the fuel pump or is it something else?

 

what do you mean it acked like it wanted to turn over? did it crank, or did it start to slowly then stop, if it cranked slowly you are probably looking at buying a battery but if it just stopped while running the alternator my not be charging, if it does crank it may be a fuel pump