04 6.0 with no FICM sync and no fuel pulse width. Crank/cam sync yes. All other data is good. Tried known good FICM and PCM but nothing. Had glow plug codes thats it. Found chaffed wires due to mice. Replaced damaged Injector harness still nothing. Fuel pressure is good btw. Any help would be great.

 

You've checked every wire between the PCM and the FICM?

 

Found chaffed wires at battery tray but they werent touching. Also p/s reservoir has been leaking on harness turning tape and coating to goo but no damaged wires.

 

Cam/crank yes
RPM 150+
ICP desired 500psi+
IPR desired
ICPV .80 or more actual
FICM sync yes
Fuel pulse width ordered

truck runs. If your not meeting these, it won't run.

 

Have all that except ficm sync and pulse width. Have Ckt/cam sync. Both ohm out good.

 

RPM above 150?, ICPV at or above .80v?
FICM plugs snapped in? FICM logic above 9.5v and output above 45v?

 

All other data is good except what I mentioned before.

 

FICM relay? Not likely I realize since you have good FICM voltage
Grasping at straws here, worth a peek. You may be able to pop the cover off the relay to see of the contacts are pitted

 

Yeah I cant see it being the problem. Im at a loss with this one. May have to send to dealer. They have a lot more parts they can try. Will keep looking for a bit more. Thanks guys

 

This was suggested by Ed at FICMRepair.com on another thread that seemed to have similar issues, "With everything else you've tried, it may be worth disconnecting the negatives from both batteries and flipping a headlight switch on to drain down any and all power. After a few minutes, turn off the headlight switch, reconnect the batteries, and try again."

Give it a whirl?

 

Believe it or not it works, I've had it happen to me.

 

FICM Ctrl-Alt-Del

Must remember that one...

 

 

Was doing a little research and found this (not too old) thread. Wonder whatever happened here??