Ford F-150 (2004-2008) :: 4 Wheel Drive Is Not Working / Front Hubs Won't Lock In
Oct 10, 2013
(2004 f150 S.Crew 4x4) I noticed that my 4 wheel drive is not working. The front hubs won't lock in. The transfer case will go into 4 low but the hubs still won't lock in.
Anyway, I have pulled vacuum on both actuators and one of them won't hold. It's obviously bad, but is that why I don't have 4x4? It seems to me like it is not...
When I pull a vacuum on the actuator that does hold, it disengages the hub from the driveshaft allowing free-wheeling. Correct me if I'm wrong, but when the truck is running in 2wd, vacuum must flow to the actuators preventing the hubs from engaging? The actuator on the bad side is locked 'in' so the driveshaft always turns.
According to my train of thought, since the actuator has failed in the 'locked in' position, I should still have 4x4- What am I missing?
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I recently picked up a '99 F250 Super Duty with the 6.8L V10 for a song.
The 4 wheel drive hubs are not working with the vacuum. If I use the manual lock on the hubs all is well. I ordered the Innova 31703 CarScan OBD2 + OBD1/ABS/SRS Scan Tool. It says it does Trans codes. I am hoping it will cover the 4 wheel drive too.
Maybe related, the heat is always on. Meaning I feel heat at my feet when the temp dial is cold and fan is off. I can't find the heater control valve to check the vacuum line.
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I have a 2006 F150 4x4 5.4L 43000mi. My four wheel drive is not working. I have the dash mounted switch to switch it into 4x4 Hi 4x4 Low. When I put the switch into 4x4 Hi nothing happens. 4x4 does not engage, and the 4x4 Hi light on the dash does not illuminate. I get the same symptom when the switch is placed into 4x4 Low. I have checked all of the 4x4 fuses and they are ok. I checked all of the vacuum lines to the hubs and they appear to be intact. What I should check next? What would cause this?
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Ok, So, Im 40 miles from home stuck in ice and snow in a hotel.. (my wife works close by- thought it would be safer than driving in the 10 inches of snow we got 3 days in a row) so, I go to pick her up tonight and I engage 4hi.. I hear the click and the light comes on.. but no clunk of the hubs locking.. I drop it in 4 lo.. it shifts in low.. but the hubs are not locking..
I hear a ticking sound as I drive and when I put it in 2wd it goes away. I turn off the truck, turn the wheel hard both ways .. get out and I can physically turn the drive shaft and I hear the ticking in the hubs. If I read correctly when the truck is off these should be locked?
is it possible the vacuum is not releasing? I also get the groaning when I start up of the air diverter.. that im told is operated by vacuum.. so I am guessing I have a vacuum problem??
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So from my previous post of might having a tranny problem or differential issue, it turns out that my front passenger side wheel hub is bad. Here is the odd part......the front passenger side wheel has some side to side play and it does make a clunk noise but it spins freely. On the driver side, there doesn't seem to be any play but it has resistance when spinning the wheels. Are both front wheel hubs bad or just one?
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2004 fx4, transfer case engages, but front wheels won't engage. I assume the vacuum solenoid is stuck, any other thoughts?
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So after eight years my Warn premium hubs have taken a crap and developed major play internally. After speaking to Warn warrenty department and sending videos they will replace them according to the lifetime limited warranty. Problem is they sill not send out new ones until they receive the old ones, so I was told from time i remove mine and send them back and get the new ones it will be two weeks maybe a few days more, there is no snow in the extended forcast and im wondering what damage could occur with me funning the truck everday to work etc with the stub shafts just hanging there?
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Do a 2004 Saturn view front wheel drive transmission will fit in place of an all wheel drive...
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I have an 04 F150 (4.6, auto, 4x4, SCrew) with 300,000 miles. Any success modifying existing 4X4 IWE actuators so they are always locked in?
My last set of actuators didn't last long My vacuum is too low under hard acceleration... Actuators partially engage leading to early failure.
I'd like to take an actuator apart, modify it so it's always locked in. Some loss of mileage? Other ramifications?
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I have a 98 ranger4x4 front hubs will not lock in. replaced vac lines that were rotten still will not lock,checked vacuum at solenoid had vac for a min or so then it stopped, ran vac strait to main vac line for continuous vac and they still will not lock in, had 4 wheel just the other day. What can I check or do besides set it on fire.
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My 2009 F-350 4x4 has a front wheel option of Auto or Lock ; I think I understand the Auto option but under what circumstances would I lock the hubs and is it safe to leave them in the Lock mode when traveling on the highway?
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My 2010 f150 stx 4x4 fails to lock in the front hubs...
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2001 F-250 7.3. The auto lock hubs are not working on the truck lock hubs in and all works fine. First thought is the vacuum system has a leak or something of the sort. Had truck at the shop they are telling me the GEM module controls the vacuum to engage the auto hubs and the signal is not coming from the GEM and it need to be replaced. It was the GEM causing the problem.
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My F350 4x4 won't go into 4 wheel drive unless I get out and take them out of auto and put them in locked position and when I have it in lock mode it seams to work like it's in auto mode, when I put the switch on the dash in 2wd, it seams like it's only driving the back wheels....
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I have a 2010 F250 with 154000km (96000 miles) that we bought last week. When I was looking it over during the purchase I noticed the front axle didn't lockup in "auto", in manual lock it seemed fine so I figured vacuum leak or something like that. Yesterday morning I was in the yard and got a little hung up in snow drifts so just got out, locked the hubs and switched to 4x4 and I think the front end didn't engage at all.
So later on I had it in the shop installing the two way radio and decided to check the front end out a little more thoroughly. Vacuum lines seem fine, hubs turn fine but I notice the axle shafts both move up and down almost a quarter inch, that seems excessively loose to me. I've been doing some research on the internet and it appears the front hubs are serviced as a unit, also some information seems to point to needle bearings within the actual locking hub mechanism itself?
So the questions:
1. Does that front axle shaft seem excessive? What are the specs?
2. Can I replace bearings and seals only or do these units come only as assemblies? Inner hub, outer hub units? Wheel bearings seem fine.
3. With that much play is there a chance the outer axle shafts are worn also?
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I noticed that my 4WD is only working now when I manually lock the hubs in (they have that options!), and the air blows out the defroster when I shift, so it looks like I have a vacuum leak. Where are the typical leak points on a 2006 F250? What's the best way to confirm a leak (other than just replacing all of the hose)?
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I recently purchased a 2003 F350 FX4 Dually with the 7.3L Diesel. It has locking hubs and electric shift in the cab.
I have had locking hubs before that you had to engage to shift into 4 wheel drive and I have had trucks without locking hubs.
My truck didn't come with a manual, so I am looking for instructions for the proper use of this system.
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I have read through the folders and many websites on 4x4 problems. My problem has to deal with my four wheel drive not wanting to engage. It has nothing to do with the front end or solenoids. When I put it into 4x4, hi or low it will not send any power to my transfer case motor. It wont even illuminate any lights on the selector switch. I have checked all fuses and replaced any relays that have to do with the 4x4. Where I should go with this?
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I have a 2005 F-150 with ESOF. When I turn the switch to 4x4 or 4low the lights on the dash will turn on but the front tires will not turn. I checked all the fuses and they were good. I'm not very familiar with this 4x4 system, what the issue is or on how to fix it?
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I have a 2005 KR that the 4wd doesn't lock in the front wheels. I haven't seen my exact problem as I have been searching it. When I turn the switch. The dash lights both in high and low 4wd. I hear the transfer motor engage in both hi and low. No ratcheting noises from the wheels. I have replaced the solenoid. And still nothing. Checked fuses And they are OK.
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I have a 07 f150 and while driving I have a vibration only in 4wheel drive high but not a bad one but when I take my foot off the throttle it gets worse as well as a rumbling sound!! this is only after a 6" lift was installed it seems and I have replaced both front drive shaft u joints thinking that was the problem but didn't solve the problem....
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