Automatic hub help
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Joined: Nov 2014
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Automatic hub help
I am in the process of attempting to get my auto hubs to work. My truck is a 2003 F350 6.0 auto trans with auto transfer case. I replaced the vacuum actuator. The old one was clearly broken. I tried the new one with no result. I tested the power to the actuator. It has a 3 wire plug. With the ign on, the middle wire has power, no matter the position of the 4x4 ****. One of the other wires is the ground. So that only leaves the red wire. It dose not have power to it in 2wd or 4x4. Can someone tell me if it should have power and where it goes? Thanks in advance
Logistics Pro
Joined: Nov 2004
Posts: 4,795
Likes: 47
I can't answer your question, but why not save yourself the aggravation and just manuslly lock the hubs. My auto hubs in my 2006 F350 stopped working years ago; I just manually lock them each fall and unlock them in the spring.
Cargo Master
Joined: Jan 2012
Posts: 3,053
Likes: 21
From: Pittsburgh, PA
Yes it is harder on the truck, but not awful. You're using more energy to rotate additional mass.
I haven't messed with the electronics of the auto locking hubs, but I would definitely check your fuses. When the old module went bad, it may have blown the fuse.
This should help with explaining the hubs. Look at this article and the link to servicing auto hubs within it. https://www.ford-trucks.com/forums/1...9-04-hubs.html
I haven't messed with the electronics of the auto locking hubs, but I would definitely check your fuses. When the old module went bad, it may have blown the fuse.
This should help with explaining the hubs. Look at this article and the link to servicing auto hubs within it. https://www.ford-trucks.com/forums/1...9-04-hubs.html
Logistics Pro
Joined: Nov 2004
Posts: 4,795
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Very minimal effect having them locked all winter. Supposedly a little decrease in mileage. It's just the hubs that are locked, not the whole axle and drivetrain. You can always unlock them too if you have a dry spell, and then lock them again when it snows.
Post Fiend
Joined: Mar 2009
Posts: 11,798
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From: Mt. Shasta California
Actually it is the whole front drive train that turns all the way into the T-case. (Axles, gears, drive shaft, etc) but it doesn't hurt anything since there is no load and it keeps the condensation down, and exercises the rear (front) end. It will cause minimal MPG loss due to the ring spinning the little pinion in heavy oil, etc.
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