2003 6.o l diesel 52000 miles while driving down glow plug light turns on and shuts down power to truck for about 2 seconds then power restores then about a minute later does same thing again. after that truck will drive fine any one have any ideas no other lights turns on

 

Hi reed19889 and welcome to FTE.

Where are you located and how cold is it?

 

i am located in pennsylvania and its been averaging around 17-30 degrees itsweird it only happens once in awhile andonly last a second or two but the truck looses all power

 

Moved to 6.0L Powerstroke Diesel Forum.

 

I'm not a tech, but glow plug lite on makes me think computer is
seeing ignition key turned to "off" and then back "on again.

You might be able to re-produce this in your driveway,
with the truck running jiggle the keys/ignition switch see if you
can make it happen yourself.

Do you have lots of keys hanging on your key chain?
Not sure if in our vehicles the ignition switch is prone to this or not.
But, I had an old car that shut off by itself sometimes
from the weight of a bunch of keys on the key chain.

Did you hit a bump when this happens? maybe a loose wire?

Hopefully, it's ignition switch related vs. computer.

 

I'd be willing to bet you have a wiring harness chaffing issue. Actually fairly common with the 03 and 04 trucks. There is a section in the tech folder that shows you the most common places to look and how to repair the harness. If you have a code scanner you might try looking for codes but if it's a chaffing issue it might not store anything.

 

OK THANKS EVERYONE FOR THERE HELP THE KEY RING FOR THE TRUCK ONLY HAS THE KEY IT SELF AND THE UNLOCK REMOTE BUT I WILL CHECK THE KEY SWITCH I WILL HAVE TO LOOK UP THE CHAFFING SECTION THE LOCAL FORD DEALER THINKS ITS A RELAY OR GLOW PLUG GOING BAD ATLEAST THATS WHAT THEY SAID OVER THE PHONE I WAS TRYING TO SEE IF ANYONE ELSE HAS SAME KINDA ISSUE

 

I LOOKED ON THE TECH SECTION AND DIDNT SEE ANYTHING ABOUT COMMON CHAFFING LOCATIONS

 

Here is one for the injector harness: Diesel Technician Society

Typically it's any tight spot or bolt where the harness passes through, and in your case I'd start by looking at the passenger side valve cover around the back of the alternator. There are a LOT of bolts/studs that stick up that the harness can rub on and go through the harness in very hard to see places. This is NOT an easy thing to find. It can take some detective work. Be patient.

 

ok thanks alot i will look

 

the correct awnser is most like this one. its not a glowplug or a relay issue.
you have a pcm reset issue. check the harness next to the glowplug controller, under the pvc tube and near the ficm. those are the 3 most common. also suspect is the ebp and or the icp sensor.

 

yo think it is wire issue or the acual units

 

could be either thats why I suggested what I did.

 

i did find a bare wire onthe right side of truck down by fender well theres like 4 or so electrical connectors that connect together it was on on the connector that was closest to the front any idea if that would create the problem i dont know what the wires go to i looked online trying to figure out where the wires go to

 

Tape them up real good and take it for a test drive...