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4 X 4 not engaging !!!

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Old Jan 1, 2007 | 04:36 PM
  #1  
parkland's Avatar
parkland
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Unhappy 4 X 4 not engaging !!!

What did i do?
I dont know.....

when you put the truck into 4x4 with the dial, the 4x4 light lights up, but it doesnt actually engage.
for some reason, locking the hubs on the front engages 4x4, but it wont engage automatically...
Whats going on guys.....frozen connector? low diff fluid???

any feedback is appreciatable....
 
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Old Jan 1, 2007 | 05:01 PM
  #2  
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From: Central, Al
I would suspect vacumn leak

If your AC in on MAX and you engane 4X4 does the air change from the dash vents to the defrost vents?
 
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Old Jan 1, 2007 | 05:04 PM
  #3  
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usmc5953
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Have you checked your vaccume lines going to the wheel, I also read something about there is a vaccume line that is behind your glove box, not sure which one, you may just want to check to make sure that they are connectted and in good shape. Have you done any work on the truck recently or since you used 4x4.

Andrew
 
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Old Jan 1, 2007 | 05:09 PM
  #4  
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vac leak?? now that you mention it, when i rev the truck up, the vents change to the defrost.....

now, how can i find a vac leak???
 
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Old Jan 1, 2007 | 05:54 PM
  #5  
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Originally Posted by parkland
vac leak?? now that you mention it, when i rev the truck up, the vents change to the defrost.....

now, how can i find a vac leak???
Yep, vacuum leak. Now is the perfect opportunity/excuse to get a set of WARN premiums.
 
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Old Jan 1, 2007 | 06:56 PM
  #6  
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Uzumati
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From: Central, Al
Originally Posted by parkland
now, how can i find a vac leak???
Well the Vacumn pump is on the pass side fender well the lines run to the interior air duct and the 4X4 hubs. The seal on the hubs is the most common.
 
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Old Jan 2, 2007 | 02:45 PM
  #7  
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seal.... expensive???
 
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Old Jan 2, 2007 | 03:06 PM
  #8  
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From: Va. Beach, VA
Not sure what it costs, but it's Hub Lock Seal Kit Part #4C3Z-1K106-AA that includes 2 o'rings and one clip. Could possibly do both sides if one old clip is in good shape.

Hubs basically slip straight off/on after wheel & hub clip ring is removed.

Got the same thing going on in mine as well as several others on here. Now that the weather is turning, more and more folks are discovereing their seals have worn away.

Otherwise, if you don't mind the old fashioned way, simply get out each time and turn the **** to "Lock". Only other inconvenience is the vent/defrost thing.
 

Last edited by Reckless; Jan 2, 2007 at 03:46 PM.
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Old Jan 2, 2007 | 03:41 PM
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my 4x4 works...but low range doesnt...just the sameas 4HI.....?? sorry for hijacking
 
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Old Jan 2, 2007 | 10:09 PM
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It seemed to stop working after barreling down a 12 kilometer 50 minute bush trail going to work the other week....
 
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