Hey just finished putting 8 injectors in my 2003 f250 6.0 v8 power stroke got it all back together no crank and no fuel pump when I turn the key I checked all fuses relays determined the ignition switch is good the starters good cranks over good by useing the wire on passenger side fender when touching the positive post checked ipr and icp both good connections so I removed the first plug to pcm on drivers side fender with the key turned to run and fuel pump worked pushed it back into pcm and fuel pump stopped working wondering if the pcm was bad would that cause no crank and fuel pump not to get power from key

 

check the FICM relay?

 

Is that under hood drivers side fender ?

 

yes it is, along with a couple other relays. You could change then around for a test if needed, they are the same size.

 

Ok il go check would that cause no crank or just the no power to fuel pump I wonder

 

I tryed switching relays they seem to be all good doing same thing just stumped why when I pull that first plug out of pcm the pump starts working and still no crank from key

 

maybe a bad key?

 

Tryed two does same thing I'll keep plugging away at it see what I can find out thanks anyways

 

maybe a ground in the wire. You unplugged it and everything worked, then plugged it back in... I'd start there. Could be a bare spot on the wire.

 

Look closely at the connector and wires at the fan shroud for the fan clutch. Another posibility is the EBP sensor and its wires or connector. Crank is being inhibited by the PCM because it is seeing something it doesn't like. One posibility is shorted vRef voltage at any of the sensors. These two are just the most common problem areas. This power comes from fuse f2-22 (under the dash) check it specifically. Also make sure the blades of the fuses are between the clips in the fuse box. It's possible to put the fuse in with the blades beside the clips and make a poor connection. It will look like it's in there right but it isn't.

 

hey never believe what I found I was checking the ficm relay again and if I hadn't dropped a socket which fell behind undernieth the ficm relay bracket as I was searching for socket felt a wire so I took of the bracket and a rodent had chewed 4 wires so I reconnected them and now it cranks from key and fuel pump is working thought I'd post this incase someone else has same issues as I would never of seen this if I hadn't drop a socket lol crazy that 5 mins of chewing can cause 5 days of frustration all good now thanks everyone for your help

These are the wires that got chewed

 

You must have long arms, that would suck to have to fix those wire in that location! lol

Good job. The 1 time out of a 100 you are glad you dropped a socket!

 

hahah you bet I'll be glad to drop them more often now lol

 

Yikes! that'll do it. Glad you got it sorted out

 

Excellent job Moose! The key was that you plugged a connector in and it stopped... that says a ground.

Make sure your little buddy is gone.