I have a 2001 Ford F-150 sometimes when I turn the key to crank it the theft light flashes rapidly and it wont

Question

sometimes the light flashes and the odometer shows a bunch of dashes and it will not start and other times it fires right up

Answer 1

Huh.......That's odd.

Answer 2

there is a fault with the PATS(passive anti theft system). that is ford's on board anti theft system. inside your key there is a chip that is programmed to your car. if that chip isnt present, the vehicle will not start.

you have to hav ethe dealer fix it, only the NGS, WDS, IDS an PDS factory scan tools can correctly diagnose this problem