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Old Jan 20, 2015 | 10:37 PM
  #16  
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The problem I see with EOSF is folks don't seem to check their 4X4 occasionally to ensure it's working. I check mine every so often to check that's the system is working.
 
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Old Jan 21, 2015 | 07:30 AM
  #17  
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My ESOF system gets a going-through in the fall, like the slide pins do. Unlocked hubs reduce wear on the front differential and drive line. I back the OP's play here, I prefer having the ESOF system work as designed.
 
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Old Jan 21, 2015 | 08:58 AM
  #18  
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Originally Posted by SDElwood
I converted mine to Warns, never been happier!

https://www.ford-trucks.com/forums/1...onversion.html
Same here!
 
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Old Jan 21, 2015 | 11:58 AM
  #19  
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Originally Posted by Tugly
My ESOF system gets a going-through in the fall, like the slide pins do. Unlocked hubs reduce wear on the front differential and drive line. I back the OP's play here, I prefer having the ESOF system work as designed.
I prefer the ESOF as well, keep it maintained and it works well. I don't like having my hubs locked in all the time.
 
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Old Jan 21, 2015 | 12:16 PM
  #20  
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I am in and out of 4x4 often enough that I doubt I go 4 weeks without using it, so I'll keep a fairly good eye on that stuff.

I also really like the idea of only having the front end locked in when I need it, and not having to get out to do that. I don't know how much it effects wear and tear, but it does seem to effect my mileage some, and with my frequent highway driving, it adds up.

I will be testing my vacuum lines and all that soon probably, and hopefully putting in a new set of hubs before too long, but they join a growing list, like oil cooler orings, passenger side fuel line, bushings, and gauges, so we'll see.

Thanks,

Baatzy
 
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Old Jan 21, 2015 | 12:39 PM
  #21  
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Originally Posted by Baatzy
I am in and out of 4x4 often enough that I doubt I go 4 weeks without using it, so I'll keep a fairly good eye on that stuff.

I also really like the idea of only having the front end locked in when I need it, and not having to get out to do that. I don't know how much it effects wear and tear, but it does seem to effect my mileage some, and with my frequent highway driving, it adds up.

I will be testing my vacuum lines and all that soon probably, and hopefully putting in a new set of hubs before too long, but they join a growing list, like oil cooler orings, passenger side fuel line, bushings, and gauges, so we'll see.

Thanks,

Baatzy
Baatzy what is all not working? What bushings? Oil cooler is easy and the new orings are about $50 IIRC. Keeping the hubs locked in will send your MPG over the edge.
 
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Old Jan 21, 2015 | 12:59 PM
  #22  
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So far everything is working, I think, I was having vacuum issues a little it ago, but it seems to have been solved by doing the wheel bearing and seals and all that. I'd just like to put a vacuum on the lines and actually test everything.

I've got a leak somewhere on top of the engine, which I think I traced down to the passenger fuel line, and I noticed the oil cooler was leaking when I did the wheel bearing and u-joint. My sway bar bushings are shot, lotta thumping happening down there when I'm driving. I want to do gauges so I can eventually do new injectors(which are needed).

On top of that I'm a college student with not a lot of down time, so I just haven't gotten around to much....

Thankfully the old girl treats me well
 
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Old Jan 21, 2015 | 04:19 PM
  #23  
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Not every ESOF problem is the same. Mine would occasionally fail to lock, but worse, one would fail to unlock. So, I'd drive 150 miles with one hub locked - which can't be good. I removed and carefully cleaned/lubed the auto lock hubs, and they never worked reliably. If you're on an icy hill, and you expect 4WD, it can be dangerous to have unreliable auto hubs. If my ESOF hubs were reliable, I would have kept them. My previous gas Super Duty's ESOF hubs were just as bad.

Continuing my hard luck story, I finally bought Milemarker manual hubs. One of those acted up (hard to unlock) and they sent me a warranty replacement that was no better. I shaved off part of the detent ball spring and now it works nicely.
 
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Old Jan 22, 2015 | 01:43 PM
  #24  
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Look at the fuel bowl and follow the steel fuel line to the pass head. My bet is the fuel line is rubbed through at the clip that holds it to the head, under the intake. If so go to Ford and purchase a new one with new rubber grommets. Don't use the clip hanger with the new line.
 
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Old Jan 22, 2015 | 01:45 PM
  #25  
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With the EOSF hubs you need to take them part and lube them.
 
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Old Jan 22, 2015 | 01:59 PM
  #26  
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Originally Posted by Kamstutz
Look at the fuel bowl and follow the steel fuel line to the pass head. My bet is the fuel line is rubbed through at the clip that holds it to the head, under the intake. If so go to Ford and purchase a new one with new rubber grommets. Don't use the clip hanger with the new line.
X2 - good call
 
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Old Jan 22, 2015 | 02:42 PM
  #27  
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Kamstutz - That is the exact procedure I followed that put me on the track of the fuel line, and I think it is exactly where you stated, I can't quite get my eyes on, but I'm almost certain thats where it is.

On a side note, I was having some weird noises from the front passenger side where I did ujoint and wheel bearing, got to checking it out, my hub did not unlock completely, finally got it to unlock and now it sounds like something is messed up in there. Probably on its way out.

Baatzy
 
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Old Jan 22, 2015 | 02:52 PM
  #28  
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Originally Posted by SDElwood
I converted mine to Warns, never been happier!

https://www.ford-trucks.com/forums/1...onversion.html

I did the same thing to mine...Stock hubs were unreliable.
 
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Old Jan 23, 2015 | 09:55 AM
  #29  
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Switch the hub locks sides and see. A dude was bitchin up a storm on how bad his EOSF was, replaced EVERYTHING and I mean EVERYTHING. I told him he needs to see the EOSF commands with an AE. He took it to the dealer and they replaced the blown 30A maxi fuse. Problem solved. Never forget the simple things.
 
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