Hard start

[RanchStroke]

I have a 00 F250 SC with 101K miles on it and lately since its been cold their has been two ocassions in which after my truck does not want to start. It just cranks the first two or three turn keys but never starts, then the very next time it will start up. When I plug it in at night it fires right up. The temp has been in the mid twentys and thirty's. Does anybody have any ideas of what could be going on?

[icysmooth]

Check your glow plug relay-oe relays use a rotating style contact-basically,it spins every time it's energized and certain points are known to pit up.
Use a meter and cycle the relay several times and see if load-side voltage is consistant.
If not -replace your relay.

[Shooter04]

Originally Posted by RanchStroke

I have a 00 F250 SC with 101K miles on it and lately since its been cold their has been two ocassions in which after my truck does not want to start. It just cranks the first two or three turn keys but never starts, then the very next time it will start up. When I plug it in at night it fires right up. The temp has been in the mid twentys and thirty's. Does anybody have any ideas of what could be going on?

Sounds EXACTLY like what my truck went through last week. It was the glow plug relay. Had it replaced and she fired up just fine after the wait to start light went out. My prediction for you...either GPR or your actual GP's are shot.

Never fear...not an expensive fix at all.

[NCHornet]

I have a write up in the main 7.3 section that will walk you through checking the GP system, it is a sticky thread at the top of the section.

[NCHornet]

Here is a link

Troubleshooting GPR & GP's