my truck started acting up the battery needle went to high and the dummy lights on the dash would come on only when i was driving if i stopped it went back to normal. i would have to jump it to start it then the next day i went to jump it and nothing it would crank over and over but wont start. i figured the alternator was over charging. so i took it out and had it checked it was bad. put a new one in and a new battery because it was bad too. now the truck still wont start. it cranks over and over but no start. im lost and ideas on what it could be.2003 f150 xlt 5.4 motor