Question about 2001 Ford F250 Super Duty Super Cab

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Auto hubs stop working on 2001 f 250 4x4 works win lock

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The auto hubs are controlled by vacuum either from your engine if you have a gasser or by the vacuum pump located on the passenger side of your truck on fender inside engine compartment if you have a diesel. First item is a question. are you having any problems with your vents in your truck? If yes and you have a diesel. chances are your vacuum pump is not working. If you have a gasser you may have the same problem with vents not opening rightas well. You need to trace all your lines for a break in the line somewhere. They route on the right side of the engine down and accross the cross member. If your diesel pump is working and making vacuum then you need to check for routing breakage just like the gasser. The lines are small black lines that almost look like wires. There will be small connectors on them so you will be able to pull them apart and see that they are vacuum lines. They go all the way down and hook to your spindles so you can also back trace them to make sure you have the right lines. If you find no problems with the lines then you may have a problem inside the hub. Normally an o-ring leak but sometimes a failure of the hub. Please make sure to let everyone kow how i did for you. I am on here with a different sign in as well and just started advertising my business on here so this profile shows i am new. I am A Guru with ford expert brand aceppdug

Posted on Feb 08, 2010

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Can't get my 95 Geo Trackers 4WD to work. The indicator light works still but the wheels themselves won't engage. Can anyone plz help me out with what might be my problem?


For Trackers (and Sidekicks) of this era (1989 to 1998) the front axle locking device is a locking hub on each front wheel. (There are no actuators until the model change in 1999.) Locking hubs come in two flavors, Manual and auto locking hubs. A look at the from wheel should tell you what you have. Manual hubs have a knob like lever with the word "lock" and "free." Auto hubs say "Auto-Locking" right on them. Both types of hubs require servicing periodicity. (Normally annually.) This means removing and disassembling. Then cleaning and light greasing before reassembling. There are some good videos on the web on how to service the manual hubs. Auto hubs are a little harder to ensure they are working properly, but some people like them. (Not me.)

Please note two things:
1. Due to differential action, BOTH hubs need to be locked for any power to be applied to the front wheels.
2. Trackers of this era are PART TIME 4x4, NOT all wheel drive. They have nothing providing for different wheel speeds front to back like a center differential. This means they should NOT be used on non-slippery surfaces like dry pavement. Beside causing handling and braking issues, it can destroy your transfercase driving on dry pavement in 4x4 due to what is called "driveline wind up".

PLEASE if you do not understand this, look it up... if you still do not understand, ask and do not use the 4x4 until you do.

Feb 18, 2015 | 1995 Geo Tracker

1 Answer

My 2002 Kia sportage 4wd keeps jumping into 4wd while driving and it make an awful noise


I had the same problem on my 99 sportive. It turns out that there is a vacuum leak in the hubs. I solved it by changing the auto hubs to manual hubs and have had not problem since. When I lock the hubs in 4wd I hear a winning from the wheals but not that nasty noise. I hope that his helps with your problem. Chris Tina

Jan 15, 2011 | 2002 Kia Sportage

1 Answer

My 2004 f350 4x4 will not go in to 4wheel drive when the hub are in the auto position if i lock them it works. Looking for a repair manual Brad


vacumed line pull the hub lock in auto
check the line at selenoid (right side fender under hood)
for voltaged when in auto and for vacumed then follow line to hubs
check for cut or pinch or rubbed or burned
disconect at hub and test there for vacumed if yes
pull hubs off clean and inspect o-rings

Dec 17, 2010 | 2004 Ford F350

1 Answer

Can i get rid of the vacume part of my hubs i have hubs now that are lock and auto because the vacume seals keep going bad.


If you lock them , doesnt that work? I though tthat AUTO was to keep you from having to go outside and manually locking them, so locked is locked....right?

Dec 01, 2010 | Ford F-250 Cars & Trucks

2 Answers

Front drive shaft not fully engaged in 4WD, with truck on stands all 4 wheels do rotate but if i stop front wheels the front drive shaft is not engaged


Hi,
Do you have auto locking hubs on the front wheels, or manual locking hubs?
If you have auto locking hubs chances are they are not engaging properly and will need to be removed and spline sets checked for broken teeth on locking hub and locking shaft.
If you have manual locking hubs then check that they are firm when turning to engage them in the lock position.If they are light when engaging them to the lock position then they my have broken/worn out the locking hub and spline. Also check that the engaging spring inside the hub has enough tension to engage the hubs they may be broken. If the hub are all ok then you have a problem in the transfer box, where the 4WD lever is not meshing the transfer box properly. Hope this helps, let me know how you get on.

Jason

Apr 04, 2010 | 2002 GMC Sierra C/K1500

1 Answer

When in auto hubs the 4 wheel drive doesn't work


They are operated by vacuum. Check to make sure the vacuum lines are connected and not ripped or anything. If that checks out fine, remove the vacuum line from the hub and apply vacuum to the hub, if the hubs lock then the problem is in the vacuum line or switch.

Apr 08, 2009 | 2006 Ford F 350 Super Duty

2 Answers

Ford 250 auto/lock hubs


I have the same hubs on my truck as what you have. I have been told it can be done you just have to know if you have a dana 50 or 60 front axle. The warn hubs i'm sure are a better quality hub but if your worried about the auto feature of your current hubs. That is vacuum accuated when you 4 wheel drive is engaged. And there fore vacuum engaged. Mine used to work great but after a lot of mudding sand got into seals and vacuum didn't work anymore so i treat them as free/lock hubs.

Jan 13, 2009 | 2000 Ford F250 Super Duty Crew Cabs

1 Answer

1993 Isuzu Trooper auto locking hubs not engaging


Just have your auto - locking hub cleaned and use your 4wd more often, it get stock usually for non usage. dont use grease after cleaning, use oil or thick silicone oil.

Dec 05, 2008 | 1988 Isuzu Trooper 2 Door

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