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post #1 of 6 (permalink) Old 03-09-2014, 10:08 PM Thread Starter
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ESOF help needed

I have a 2007 F350. The ESOF started to act up one morning, it said I was in 4wd but I wasn't. Drove a little ways and then there was a whining sound and then a clunk, sounded like it was the transfer case, but it still drove normally. I stopped and tried to put it in 4low and it went in but wouldn't come out of 4low. I shut the truck off and started it and played with the selector and jerked between forward and reverse and it finally went into 2WD. I changed the shift motor on the transfer case same problem, no light on the selector at all and won't shift. Checked all the fuses and relays they are all good. I checked for power at the transfer case shift motor and there is none. The information I have found is very confusing as with regards to the SJB or Gem module. Does a SJB have any connection to the ESOF or only if you have Gem module. Any information would be of great help.
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post #2 of 6 (permalink) Old 03-10-2014, 12:00 AM
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First I've heard of "SJB". Do you know what it means?

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post #3 of 6 (permalink) Old 03-10-2014, 08:58 AM
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SJB = Smart Junction Block/ Box.

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post #4 of 6 (permalink) Old 03-10-2014, 07:24 PM
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Originally Posted by Canadian Bacon View Post
SJB = Smart Junction Block/ Box.
Not possible! It's automotive, so it would be Stupid Junction Block/Box.

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post #5 of 6 (permalink) Old 03-12-2014, 10:36 AM Thread Starter
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Now I have also replaced the dash switch and it also has made no difference. I may need to bite the bullet on this one and take it to the " STEALER" I mean dealer to have it repaired. I have one more trick up my sleeve I will try when I get back from work next week. Still would appreciate any info or other stories about similar problems.
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post #6 of 6 (permalink) Old 03-12-2014, 12:10 PM
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I believe the F350 esof uses an iwe solenoid like the F150 does. If this solenoid is screwed you will have no 4x4 lights show up on switch and I don't think you will get power to the tcm either. Cheap fix depending on where you but the solenoid from. $20 to $40.
I could be wrong but worth a try.

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