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Old 06-19-2013, 04:43 PM
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4x4 not working

Dash light comes on if on street it feels like it but in dirt front tires dont spin. Had it at dealership and they changed a vacuum cylinoid and said hubs werent anygood snd not covered because they were warn hubs. But i dont hear anything locking out from transfer case.... Im lost
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Old 06-19-2013, 04:53 PM
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It could be bad vacume lines not letting the hubs to lock in. Can you manually lock your hubs? Mine wont lock in bc of bad vacume lines but 4x4 works if I manually lock them in. Does you air stay on defrost?
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Old 06-20-2013, 03:08 AM
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If you have warn hubs, you should be able to run them locked. heck on the work truck we delete the vacuum auto setup ,and plug the lines, just use the stock hubs manually as lock or free etc...
Thanks,
Deo
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Old 02-19-2015, 04:59 PM
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Quote:
Originally Posted by 05f250harley View Post
It could be bad vacume lines not letting the hubs to lock in. Can you manually lock your hubs? Mine wont lock in bc of bad vacume lines but 4x4 works if I manually lock them in. Does you air stay on defrost?
Ok, I have a 2004 excursion. I thought that maybe the 4X4 wasn't working but didn't get to test it until this snow we recently got here. I was trying to get it to engage, but nothing seemed to happen. The hubs are a bit sticky, and i wasn't able to turn it to manual lock, but was going to play with that tomorrow.
I did notice that when i tried to put it into 4x4 i noticed the defrost turned on and thought that was weird. What is up with that?
Does anybody have any suggestions?
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Old 02-20-2015, 09:15 AM
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Quote:
Originally Posted by DeepSpringFarm View Post
Ok, I have a 2004 excursion. I thought that maybe the 4X4 wasn't working but didn't get to test it until this snow we recently got here. I was trying to get it to engage, but nothing seemed to happen. The hubs are a bit sticky, and i wasn't able to turn it to manual lock, but was going to play with that tomorrow.
I did notice that when i tried to put it into 4x4 i noticed the defrost turned on and thought that was weird. What is up with that?
Does anybody have any suggestions?
When the defrost turns on after switching to 4x4 it's usually a sign of a vacuum leak...the 4x4 vacuum solenoid on the passenger side fender near the battery will usually be the cause of the problem...but check the easy stuff first, the vacuum lines between the frame rail and hubs can get rubbed through causing a vacuum leak. You can buy a new 4x4 solenoid at the dealer for around $80. Good luck.
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Old 02-21-2015, 08:29 AM
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Thanks,
After the snow melts i'll look into this.
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Old 02-25-2015, 09:47 AM
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Quote:
Originally Posted by Therabbittree View Post
If you have warn hubs, you should be able to run them locked. heck on the work truck we delete the vacuum auto setup ,and plug the lines, just use the stock hubs manually as lock or free etc...
Thanks,
Deo

What he said. Delete that crap and go old school.
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Old 02-25-2015, 11:42 AM
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Quote:
Originally Posted by Dbus View Post
Dash light comes on if on street it feels like it but in dirt front tires dont spin. Had it at dealership and they changed a vacuum cylinoid and said hubs werent anygood snd not covered because they were warn hubs. But i dont hear anything locking out from transfer case.... Im lost
If you're not hearing the t-case lock in then the hubs have nothing to do with it. I would check the electrical connection at the transfer case. I've seen that plug come loose and even get broken from road debris.
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