Ford Super Duty (1999-2016) :: 2000 F250 - ESOF Auto Hubs Not Engaging Automatically
I have a 2000 f250 CCSB 4x4 with the ESOF auto hubs. The auto hubs won't engage automatically. They work fine manually. The transfer case is engaging and correct lights are coming on. There is a little bit of vacuum coming from the vacuum switch but it doesn't seem like much to me. All the dash HVAC controls work fine though. I Lubed and cleaned inside the hubs according to Guzzles directions.
While torn down, I blew through the vacuum port on the outside of the hub and there was little to no restriction. I don't think there is enough vacuum to pull the hubs, but is that possible if all the dash controls work fine? What pressure should it take to engage them? My next step is to pick up a vacuum pump and see if I can engage them with it.
Ford Super Duty (1999-2016) :: 4WD Is Only Working Now When Manually Lock The Hubs - ESOF Vacuum Leak
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)?
View 2 RepliesFord Super Duty (1999-2016) :: ESOF - Hubs Won't Disengage
I've read many posts about ESOF and fault vacuum lines and how that will prevent 4x4 from engaging. I experienced a different problem this past weekend. Here's the situation...
Was about 1.5hr drive up to the mountains. Outside temp when we left the house: 10F. Outside temp when we arrived at destination: 9F. Quite a bit of road grime on the way up from sand, slush, and that magnesium chloride (or whatever they hell they put on the roads in an attempt to keep it from freezing). 4x4 worked fine on the way up. 4x4 light on dash was on, and I KNOW I could not have climbed the snow-covered forest roads without being in 4x4. Also, I could hear and feel the front hubs turning.
On the way home, once I got to where the roads were sufficiently ice free, I turned the dial on the dash back to 2WD. 4x4 light goes out. But I can hear and feel the front hubs are still turning. Toggled the switch back and forth a few times. 4x4 light would come and go with the toggled switch. But the hubs didn't disengage.
When I got back into town (outside temp now about 5), we stopped at a red light and I toggled the switch again. This time, the hubs disengaged. Is this a sign of bad vacuum? Or more an indication of faulty hubs??
Ford Super Duty (1999-2016) :: How Does ESOF Locking Hubs Work In Auto Mode
I took apart, cleaned and lubed my hubs. My question is: how does the vacuum make the gears work?
Does the vacuum force (suck) the nylon assembly to push the outer gear towards the center of the truck, sliding on the inner gear thus engaging the teeth so that the axle shaft turns the hub?
When the vacuum is gone, does spring pressure pushes the outer gear away from the center of the truck thus disengaging the teeth from the inner gear and allowing the hub to free wheel?
Is this vacuum source constant during 4wd and not present during 2wd or do I not understand how the system works? I have read about a “vacuum pulse” that locks the hubs and another pulse that unlocks the hubs and this confuses me.
BTW, I like the way the Auto lock works. I had a set of Warn Auto Lock hubs on my 78 CJ. They worked on the principle of a set of roller bearings that would lock (pinch) when there was torque coming from the drive shaft. There was no vacuum involved at all. The down side was that when you coasted, the front hubs would be in two wheel drive and so you would not get the engine braking on all 4 wheels. These ESOF seem to have solved this problem.
Oh, I should probably tell you that I just purchased my 04 F250 SuperDuty 4x4 with the 6.0 diesel, just had it a week. It has been 18 years since I owned a 4x4. Before this I owned an 87 F250 2wd with the 6.9 diesel.
Ford Super Duty (1999-2016) :: 2001 F250 4X4 - ESOF Switch Not Engaging Hubs?
I have a 2001 F250 4x4 and the ESOF switch not engaging hubs, currently I have no 4x4 lights coming on in the cluster when i turn the switch. I am not experiencing any of the vaccum symptoms that most people are suggesting. I When I turn the switch i also do not hear any relays clicking. Relays have been tested, and i waited for the 45 second transfer delay that the manual mentions. ESOF switch has power, and is working properly (I know because I bought a new one in attempt to fix the problem) Basically I have no responses from any of my 4x4 indicators or parts.
View 14 RepliesFord Super Duty (1999-2016) :: 2007 F250 4x4 Not Unlocking The Hubs Automatically
Brings back memories of my many projects from back in the day. Anyway, my uncle has this f250. He said 4x4 wouldn't automatically lock the hubs in. I tested the vacuum pulse valve on the fender and changed it out. Now the hubs will lock in when you turn the light on the dash but it will not unlock the hubs unless you go outside and manually turn the hubs to engage then back to auto. Only then will the front end be unlocked. I notice small puffs of air blowing back from behind the hub themselves so I was thinking it's time to reseal the vacuum portion of the hubs.
View 4 RepliesFord Super Duty (1999-2016) :: 2004 F250 - Front Hubs Do Not Engage Automatically
About a month ago I bought a 2004 F-250 160xxx from a reputable Ford dealer here in town. The dealer performed a safety and emissions inspection, and spent about a grand on other repairs, as a condition of my purchase. Today I had it in the shop for an instrument cluster issue (at a different Ford dealer, closer to my house), and was told the vacuum lines were all messed up. Their write up is below:
"Check 4x4 operation. Transfer case shifts to 4x4 and 4x4 low. Front hubs do not engage automatically. Check vacuum at the hubs. No vacuum. Check the vacuum at the solenoid. No vacuum. Perform visual of the engine vacuum lines. There is no vacuum to the reservoir. Vacuum line is routed wrong from the fuel pressure regulator to the vapor management valve. There is other vacuum concerns. All of the vacuum line routing needs to be inspected and corrected."
The service rep told me it is questionable whether the 4x4 ever worked, although during the few weeks I've owned it, I could hear gears or other mechanical parts making noise which seemed to me to be in response to me turning the 4x4 electronic switch. She also said there was a vacuum line dangling loose with a screw in the end of it.
Before I contact the dealer where I bought the truck, I am planning my going-in position. But I wanted to get a sense of a) how serious of a problem this might be? and b) how reasonable it is that the dealer didn't catch this issue before I bought the truck while they were in their fixing other things?
The dealer who sold me the truck made it very clear that the sale was as-is, and I took it to my mechanic prior to purchase, though unfortunately he only had time for a cursory look at the engine. Obviously he didn't look closely enough to find this issue.
I'm not sure if I should ask the dealer who sold it to me to fix it, or ask them to allow me to return it, or sell it back to them, or if I should eat the cost of fixing it. How wrong would it be to try to trade it in for something else?
Ford Super Duty (1999-2016) :: Front Wheels Binding During Slow Full Lock Turns
This is the first winter I'm driving my truck. I put it in in 4x4 HIGH the other night due to the snow (and I wanted to check out everything).
Seemed to work fine until I was backing into a parking spot doing a full lock turn. It didn't seem to move. I gave it a little more throttle and it "released" like it was stuck or going over an obstacle. Happened again when I did a full turn backing into my driveway (this time turning the opposite way).
It seems to work fine going forward with tight turns. Also and it doesn't "bind" in 4x2 mode. I haven't tried 4x4 LOW yet ... I guess I don't want to wreck anything if it's not operating properly. Is this normal?
Ford Super Duty (1999-2016) :: 2004 F250 - Steering Binding Turning Left
I bought a 2004 F250 Crew Cab LB 4x4 with the 5.4 Motor and when I turn left it has some Tight Spots and I can't figure out why, I checked the Drive axles to make sure the locking hubs were unlocked and they spun freely, I Also have a lot of play in the steering wheel, Could this all be Related to the Steering Box? What else should I check for ?
View 3 RepliesFord Super Duty (1999-2016) :: Safe To Drive Without Lock Hubs?
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?
View 14 RepliesFord Super Duty (1999-2016) :: F350 - 4x4 Manual Lock Out Hubs
I just purchased an F-350 with manual locking hubs. I am unsure if I can keep these locked in for part time four wheel driving or I need to unlock them each time I go back to two wheel drive?
View 6 RepliesFord Super Duty (1999-2016) :: 2008 - Front DS Wheel Binding When Turning And Loose Seals?
I have a 2008 F-450 Lariat 6.4 4x4. I recently started noticing the front driver side wheel (best I can tell) wheel makes a noise as though it's binding uo when turning either direction, and I can feel it as well. 4wd is not activated and the hubs are in auto. When the front end is off the ground, I rotated the wheels and they spun independently unless the hubs were locked. I noticed what appear to be seals on both the driver and passenger side hanging loose (see pics). What this might be? I recently used the 4wd when we visited White Sands National Monument while pulling a 5th wheel RV.
View 9 RepliesFord Super Duty (1999-2016) :: 2010 F250 Front Hubs Don't Lock
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?
Ford Super Duty (1999-2016) :: Full-lock Clunking With Hubs Locked In?
Had to make a sharp circular turn last night in a parking lot, with the steering turned to full-lock...noticed a very audible clunking or clicking noise during the turn...went away after full-lock turning was released. My hubs are locked in...but I was told there was no issue with leaving them locked in, even during the summer. And there shouldn't be...4x4 disengaged, of course. Must have been the u-joints clicking / clunking? Problem?
View 5 RepliesFord Super Duty (1999-2016) :: 2001 F250 4x4 - Auto Lock Hubs Are Not Working
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.
View 6 RepliesFord Super Duty (1999-2016) :: 2000 4X4 V10 - Hubs Are Worn / Locked While Turning
But on my 2000 SD V10 the hubs are worn I just cant find which way to turn them to auto ?
I'm getting popping and such so I think I'm locked while turning.
Also.... IS there a way to check the COPS with a multimeter? I think I got a bad one.
Ford Super Duty (1999-2016) :: Clunking In Front End When Turning Hard Even With Hubs In Auto
So I noticed the past few days my 09 F250 was clunking in the front end when turning hard even with the hubs in auto so I knew there was an issue in there somewhere. This morning I took the jack and found the passenger side would not release no matter which way the lock was turned. Pulled the locking assembly out and found a couple of the pieces of plastic cage broken (truck has 250k miles) which is to be expected I guess but the locking ring that holds the inner piece that slides over the axle stub was off and hanging next to the c-clip on the axle.
So with the plastic of the cage already being broke and the mileage on the truck it's clear I need a new lock for that side.
Here's my dilemma, I have to deliver a conference room table 200 miles away tomorrow morning that they need for meeting tomorrow afternoon at 3:00pm. I cut the rest of the plastic pieces and took the gears out leaving just the cover with the diaphragm and put it back on the hub. I can't come up with any logical reason why I can't drive the truck this way but just want to bounce it off the experts here before I take off on a 400 mile trip in the morning. The only thing I can come up with is if I were to engage the 4wd the vacuum might suck the auto-lock diaphragm in and pop it but otherwise I can't find any reason to not run it this way, the hub is still sealed up and free-wheeling just like if it were in 2wd anyway.
Ford Super Duty (1999-2016) :: Growling Sound While Turning - Locking Hubs Or U-Joints?
Today was the first time I have locked my wheel hubs in and used 4 wheel drive. However when I did all this i noticed that when I turn there is a growling sound but only when turning. It does not make the sound when unlocked and in 2 wheel drive.
View 4 RepliesFord Super Duty (1999-2016) :: 2010 F350 Shudders When Turning Right - Auto Locking Hubs
My 2010 F350 shudders when turning right. From what I read it could be the auto locking hubs not dis-engaging or sticking in the locked position. Tutorials show it's pretty easy to pull the auto locking Hub out taking out the three screws holding it in place. My questions is what type of grease do I need to apply to the auto locking hub once I have them out and determine that is what the issue is?
View 13 Replies