4wd common issues - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 07-06-2013, 01:49 PM Thread Starter
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4wd common issues

2000 F350 4x4. 4wd has always worked since i have owned it. Today went to turn around in the yard, and with the monsoon like weather we are getting here in the mid west, i needed 4wd to do this. turned the switch on the dash......and nothin.


i had manually locked my hubs in prior to this. no light on the dash or anything. i checked fuses, and they all seem to be good. I figured i'd ask if there was a common Issue to know what to check first, or if it is crapshoot that every other issue seems to be with these things.

'89 K5 Trail Rig--not at all stock
'98 Jeep ZJ DD-nearly stock
'00 F350 Tow Pig- bone stock.
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post #2 of 8 Old 07-06-2013, 02:31 PM
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check the electrical connectors going into the transfer case.
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post #3 of 8 Old 07-08-2013, 05:50 PM Thread Starter
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got it. upper plug on the t-case was loose. clips are broken on it apparently

'89 K5 Trail Rig--not at all stock
'98 Jeep ZJ DD-nearly stock
'00 F350 Tow Pig- bone stock.
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post #4 of 8 Old 07-09-2013, 06:23 PM
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mine has stopped letting me use 4 low. sorry to thread jack but thought it would fit well in this thread. truck is in neutral with my foot on the brake and it wont shift. 4 hi works just fine. 4 low light comes on with i first turn the key but it wont shift into low. just stays in 4 hi.

Last edited by greasemykey; 07-09-2013 at 06:30 PM.
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post #5 of 8 Old 12-08-2015, 09:51 AM
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Hey I know it has been a while, but did you ever figure this out? I have the same problem and am looking through threads.
Thanks
Dave

Thanks,
Dave

2001 CCSB F250 4WD

135,XXX miles on the clock
MKM Custom 05-07 Grill, 05-07 headlights, S&B Intake, Dieselsite Boots x6, HPx, NC Hornet CCV Mod, Headlight Relays with SiverStars, MBRP 4" Turbo back 5" Tip, 203 T Stat and Billet Housing.

My favorite quote - "There's no replacement for displacement!"


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post #6 of 8 Old 12-13-2015, 09:24 AM
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Same issue here. Checked all fuses - good. Couldn't find specific relay so checked all of them - good. Does this just leave the T-case actuator?

EDIT: Just checked for voltage at T-case motor connector when switching ESOF and nothing changed. SO appears to be electrical issue. Manual states there are 2 relays (positions 40 & 41) related to shift on the fly. Where are these located?
TIA,
Milo

Last edited by Milochi; 12-13-2015 at 09:33 AM.
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post #7 of 8 Old 12-17-2015, 09:29 PM
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Quote:
Originally Posted by Milochi View Post
Manual states there are 2 relays (positions 40 & 41) related to shift on the fly. Where are these located?
Next to the underhood fuse box, there are two aux relay pods. Each one has 2 relays in it. One of them is the T-Case relays, the other is Trailer Tow Battery Charge. Sorry, I don't know which pod is the T-case.
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post #8 of 8 Old 02-27-2016, 05:54 PM
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Good thing I came here to check for some information on what might be wrong with the electrical issue of my transfer case. now I also need to find a place to work on it so I can get under the darn thing. I will be checking the relays next to the power box under the hood in the morning.
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