E4OD Wiring Harness: Where to Buy?? - Ford Powerstroke Diesel Forum
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Old 05-06-2011, 03:47 PM
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E4OD Wiring Harness: Where to Buy??

Been having Flashing OD lights probs on my truck. AE scantool showed Trans Range Sensor High Output code (P0708). Changed the Range Seensor/Neutral Safety switch, cleaned everything up. Still got the dang OD light!
The problem came out of nowhere a few months ago. No probs with tranny up till then. I can still drive it but I think I am stuck in "limp mode" because of the trouble code. Forward, Reverse all work just hard shifts.

By the way, much thanks to Bleheny here in the Org for all his help getting me to this point.

While under truck today, I was tracing the tranny wiring and I found a disaster area along the wire harness that makes me think the whole harness needs to be swapped out. No Jacket on the wire bundle. Worn and cut wires that goes to who knows where. Cant believe the dang truck ran at all! The area was past the point where the wiring for the two tranny connectors merge before snaking their way up to engine compartment.

Heres what I found



Anyway, I hear there may be a full wiring harness replacement available. Full as in all the way from the tranny connectors to the PCM. The whole 9 yards. Anybody ever hear of such a creature and more importantly where can I get one??

Would prefer to save the $$ by getting an aftermarket as opposed to OEM Ford but either way I need this thing.

Can any of you fine folks point me in the right direction here?

Thanks
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Old 05-06-2011, 06:14 PM
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Either get another harness from a wrecker, or buy some wire and heat shrink tubing, cut open the harness and solder splice new wire in to repair the damage. I've repaired wiring far worse than that.
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Old 05-07-2011, 10:51 AM
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x2 on that take some time but to me money well saved
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Old 05-07-2011, 11:05 AM
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Thanks for your replies thus far gentlemen. I hadnt thought of patching the wiring at that spot and its a definite possibility.

Thanks again and have a great weekend.
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Old 05-13-2011, 08:55 AM
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FIXED!!!!

Became clear repairing exisiting wiring was only option. Didnt have access to electric to solder here in NYC so took to my local shop to see if he could do it or refer me out. 15 mins later he is done! And I dont have the OD light or the rough idle at start anymore!

Turns out the harness probably got snagged up in the front driveshaft when I drove it back in Feb on a snowy day with 4x4 engaged and got damaged. Only had truck since Sept. So I guess you might say it was "weather related".

I will go under on my own with a solder gun and shrink tube and be sure its done right and solid but its damn good to be back on the road!

Thanks again to all.
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