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Transmission & Drive train

1998 4X4 problem


This is a discussion on 1998 4X4 problem within the Transmission & Drive train forums, part of the Ford Expedition Forum category!
I searched to forum and didn't find an answer for this. 1998 Expedition 4.6 V8 auto trans electronic / vacuum ...



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Old 09-26-2010, 04:55 PM   #1 (permalink)
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Default 1998 4X4 problem

I searched to forum and didn't find an answer for this.

1998 Expedition 4.6 V8 auto trans electronic / vacuum 4X4

My 4 wheel drive stopped working a couple of years ago and I just haven't gotten around to fixing it. I have located the problem, the front axle won't lock. I was told once by a mechanic that the vac valve on the front axle was bad and it was a $50 part. I decided I could do the work myself but, again, I just haven't had the time to look into it.

Fast forward to today.
I made the time to check everything with my wife and found that the vac valve IS working but it isn't locked on the pin that comes out of the diff.
Is there supposed to be some sort of locking mechanism / clip on the valve that holds it to the pin or do I need to replace the valve?

Thanks
D

Last edited by Shadow-D; 09-26-2010 at 04:57 PM. Reason: Added vehicle info
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Old 09-28-2010, 10:21 AM   #2 (permalink)
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Any ideas?
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Old 10-30-2010, 09:33 AM   #3 (permalink)
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Still looking for an answer :(
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Old 12-05-2010, 12:13 PM   #4 (permalink)
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Snow is coming soon and I would like to have 4WD this year...
Please help...
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Old 12-05-2010, 04:27 PM   #5 (permalink)
 
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Take it to a MECH? shouldnt be to much since you know what wrong.
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Old 12-05-2010, 09:04 PM   #6 (permalink)
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Originally Posted by Shadow-D View Post
valve IS working but it isn't locked on the pin that comes out of the diff.
Is there supposed to be some sort of locking mechanism / clip on the valve that holds it to the pin or do I need to replace the valve?

Thanks
D
Pin = the shaft that engages the front axle. Valve is not connected and there isn't any way to lock it on it.
I don't have the money to take it to a mechanic. IF I did we wouldn't be having this discussion now would we
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Old 12-06-2010, 05:31 PM   #7 (permalink)
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can you take a pic of what you are talking about? i can take a look under mine and see what we got goin on.
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Old 12-06-2010, 07:00 PM   #8 (permalink)
 
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yeah post a pic and ill look too.
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Old 12-06-2010, 09:41 PM   #9 (permalink)
 
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im lost here... the valve is working, as you say then what is the problem... is the valve no hooked to the shaft that locks the passenger side axel to the diff??? really need a picture here... or is the valve not staying engaged?? if so there is a vacum leak and the valve more than likly is bad
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Old 12-07-2010, 09:32 AM   #10 (permalink)
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Originally Posted by KWT2000 View Post
im lost here... the valve is working, as you say then what is the problem... is the valve no hooked to the shaft that locks the passenger side axel to the diff??? really need a picture here... or is the valve not staying engaged?? if so there is a vacum leak and the valve more than likly is bad
That is exactly what is going on. I will try to get a pic or two today.
Thanks
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