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4wd not working?

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Old 07-26-2009, 11:28 AM   #1
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Default 4wd not working?

Hi all, I am actually a Nissan Frontier owner and have been on ClubFrontier.org for a long time. However, my dad has a 2005 Fx4 F150. His 4wd is no longer working and this problem has us stumped! When the selector switch is turned the dash light "4 Hi/4Lo" does illuminate however it does not engage. You can feel it shutter slightly when u put it in 4lo and it shifts into a really low gear but no 4wd. I got underneath of it and the driveshaft to the front diff. does turn......

Help!!!

fuses maybe?


His

Mine
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Old 07-26-2009, 12:21 PM   #2
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if everything else turns but not ur hubs.... ima guess its ur hubs...
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Old 07-26-2009, 12:25 PM   #3
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what course of action should i take? what controls the hubs? can they be fix?
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Old 07-26-2009, 01:32 PM   #4
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of course it can be fixed....1st question is it under warranty yet. if it is might as well have ford replace it for free
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Old 07-26-2009, 01:38 PM   #5
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its been awhile since i had to use my 4wd, but if i remember correctly i had to put mine either in neutral or reverse before 4lo would engage and light comeon
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Old 07-26-2009, 01:43 PM   #6
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it could be the IWE solenoid not working, ripped vacuum line, actuators need replacing. there are only a few things that can cause the 4x4 system not to engage..

vacuum checking the 4x4 system is the easy way to troubleshoot what is the trouble.
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Old 07-26-2009, 10:18 PM   #7
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Quote:
Originally Posted by ATOM View Post
it could be the IWE solenoid not working, ripped vacuum line, actuators need replacing. there are only a few things that can cause the 4x4 system not to engage..

vacuum checking the 4x4 system is the easy way to troubleshoot what is the trouble.
^ what he said! It could be any 1, or all of those things. I have seen several posts on this topic and the vacuum lines seem to be a common problem with getting moisture inside the lines.
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