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Old 09-23-2010, 07:31 AM
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4x4 not working

Yesterday was the first time in a couple of months since I had to use my 4x4. I was in some pretty slick mud with the back and needed the front. I turned my switch on the dash, light came on, but the front wheels didn't engage. I am new to the electronic 4x4 switch and have always been a mechanical shift fan. So what can I check so I can get it fixed. Any help would be great. Thanks.
2004 HD edition F-250
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Old 09-23-2010, 07:33 AM
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manually lock the hubs in. You most likely have a vaccuum leak.
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Old 09-23-2010, 07:39 AM
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There is also a solenoid on the pass side wheel well under the hood that actuates the front hubs, that can go bad
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Old 09-24-2010, 04:46 PM
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Quote:
Originally Posted by Diverdan View Post
Yesterday was the first time in a couple of months since I had to use my 4x4. I was in some pretty slick mud with the back and needed the front. I turned my switch on the dash, light came on, but the front wheels didn't engage. I am new to the electronic 4x4 switch and have always been a mechanical shift fan. So what can I check so I can get it fixed. Any help would be great. Thanks.
2004 HD edition F-250
Mine is doing the same thing. When I flip the switch the 4x4 light turns on but not front wheels are engaged, But when the switch is flipped the front defrost come on. I have looked at the vac lines and they seem in good shape. I manually turned on the hub locks and then flipped the switch and the fronts engaged. I will be trying, to loosely fit a new set of vac lines and see if that works. If not I will be rebuilding the front hubs. Let me know what turns up at your end and I'll do the same from here.
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Old 09-27-2010, 11:28 AM
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I had the same problem and had some great troubleshooting support. Check my link below, there is a LOT of info there and some great drawings of the system. Goodluck!


AC controls and 4X4 mode
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Old 09-27-2010, 02:53 PM
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yeah i had the same problem on my ford ranger (same basic setup) itw was a vaccum leak. im not a fan of electronic 4x4 but it beats the hell of gettign out in a snow storm or deep mud to engage them
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