v10 slow start when hot - Diesel Forum

deshemar · 10-07-2008, 07:52 PM

I have an 03 f250 v-10
This past weekend I took the camper out and when I got to the campground - turned off truck, went in to register and came out the truck turned over but kinda slow as if the battery was dead/low. So, i got into the campsite and Sunday morning went to leave and the truck started great - quick response and seemingly plenty of battery to start it. When i got home i shut the truck down for a few minutes before backing to camper into it's spot - when i went to start the truck same slow/hard cranking as if battery was dying. A few hours later when I had the camper all set and moved the truck it started great.
Any thoughts?

rws444psd · 11-02-2008, 05:03 PM

my 5.0 mustang gt dose this same thing. it is the starter on mine.

ReefBlue · 11-02-2008, 08:01 PM

Heat soak.

The starter gets hot from the engine heat, as the starter goes bad, this really affects it.

Replace the starter.

deshemar · 12-07-2008, 08:11 PM

An update,
I went and had the Advance Auto parts electrical system test done and the battery was going bad. after running for a while it was down to 1/2 the CCA it should have.
Replaced it - no more problems and have towed the other day and all was good.

TJCOX · 01-30-2009, 04:28 PM

My 96 E-150 had a problem where it wouldn't crank, so I took it apart and lubed it with Fel-Pro anti-seize and it's worked great ever since.
Make sure if you get a replacement ,that's it's not a rebuilt,but a
re-manufactured or new...
Is there a heat shield on your present starter?
Neighbor had a small motorhome and every time he stopped for
gas he would have to wait about ten minutes for the starter to cool.
I believe this is referred to as "Heatsoak" when heat transfers
from the engine to the starter...