99 f250 7.3 NO START

[fordman1893]

already replaced starter relay on firewall and it still does the click once and thats it. any ideas now?

[NoRalPh]

What about the starter itself? Or the connections to it?

You can take it out and have the Auto Parts Store check it (or put it on the ground, with your foot on it ), and attach jumper cables to it and see if the Bendix throws and the Starter spins...

[fordman1893]

It ended up being the selenoid on the starter