A dumb 4WD question - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 02-29-2012, 08:20 AM Thread Starter
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A dumb 4WD question

This morning there was a lot of snow. So I had to put it in 4wd from a dead stop. It didn't work rear tires spun so I turned the hubs to lock still rear tires just spun. So I kept rocking the truck till finally I drove backwards. Then trying to go forwards the rear tires just spun till I went forward a little bit then the 4wd kicked in. Now the question does it take a full rotation forward for it to engage.

Also light came on and fuses are fine. It has esof.

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post #2 of 7 Old 02-29-2012, 11:15 AM
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Select floor air, crank fan, engage 4WD, if any air is redirected to windshield/defroster, you have a vacuum leak. Most common from frame to hub. Although manually locking the hubs over rides the vacuum leak.

If thats not the issue, try engaging in "N". I usuaally have to be in N to get 4lo.

There are two relays for the esof system, not fuses.

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post #3 of 7 Old 02-29-2012, 11:22 AM
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Plymouth MN? And as stated....check for vacuum leaks. I ditched the Auto lockers, for WARN manula lockers....wouldnt go back!

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post #4 of 7 Old 02-29-2012, 11:29 AM
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I was going to post "it's a vacuum leak". But since someone beat me to it, I'll just say: So glad I live in sunny california

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post #5 of 7 Old 02-29-2012, 12:49 PM Thread Starter
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Well I was reading this book that came with the truck it's called the owner guide heard of it? LoL it says that with the esof 4wd will not engage unless moving but 4 lo will but I didn't know how to engage it but your right for 4low press brake and shift in to N. thanks guys for getting back to the dumb question I always ask here first but!

Yes Plymouth we were going to meet in December but you never got back to me. Haha


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post #6 of 7 Old 02-29-2012, 01:23 PM
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Quote:
Originally Posted by Byrd82 View Post
Well I was reading this book that came with the truck it's called the owner guide heard of it? LoL it says that with the esof 4wd will not engage unless moving but 4 lo will but I didn't know how to engage it but your right for 4low press brake and shift in to N. thanks guys for getting back to the dumb question I always ask here first but!

Yes Plymouth we were going to meet in December but you never got back to me. Haha


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The what? That's just an old wives tale, why would you need a book for a truck?

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post #7 of 7 Old 03-02-2012, 06:13 PM
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There is a procedure for servicing auto hubs. Of u lock them in, it should work fine and if not, it's a hub problem.

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