Its Not the fuel pump

Im a newby sorry, I have a Ford 2001 Excape, it has 133,000 miles, it does turn over but wont run. i dont hear the fuel pump turn on, so I believe the problem is with the pump, the tech says it get stuck sometimes which explains why bouncing around on a tow truck fixes the problem, although for a short time. As soon a i get to the dealer, no problem, start and runs on the first try. i drive it home then a few days later, back to square one. I believe spark plugs etc are out of the question, since the fuel pump does not turn on.