Ok this is my first post here and I hope you guys can help.

2003 Ford expedition XLT

I just replaced a crank sensor, plugs, #8 coil pack and all the boots on the other packs.

when I got done I started the truck and it ran like a dream!!!

after about 2 minutes of running I shut the truck off cleaned up and went in side to change.

the wife and I were going to take the truck for a ride jjust to make sure all was well about 15-2O min later we came out to take the truck for a ride and it will not crank.

from what have read i THINK the anti theft is activated but im not sure. My key FOB remote will not work replaced the battery to make sure.
I have also checked the boards ad tryed to "reset" my anti theft but that didnt do it . i have read about a valet button but i do not see one on my truck. any help is greatly apprecated.

Jerry