Hi guys suddenly my 03 150 turns over great but won't fire . Cannot hear fuel pump buzz when someone turns key and I have tried two different keys. .As well two things are all of a sudden different my theft light between tach and speedo flashes rapidly and my overdrive light on end of shifter is on and won't go out. Could these be related to my starting problem? Appreciate any advice , Thanks...Dan

 

There was a similar post about this a few days ago and it turned out to be the PCM.

 

Yup, it was me. PCM was bad...still waiting on a new one, been a week today. I could not get it to start no matter what, had it towed to the dealer, they got it to start once,then no go. If this is in fact your problem, it ain't cheap.