Need to repair my auto 4X4.... - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 08-27-2011, 05:06 AM Thread Starter
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Need to repair my auto 4X4....

With winter right around the corner I need to fix my auto hubs. Here's what's going on. When I flip the switch on the dash to go into 4wd it don't work. I know I have a vacuum leak cause when I flip the switch with the a/c or heat on it starts blowing out the defrost. So where is the best place to start looking to track down my problem.

Thanks

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
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Rotella T6 w/Rev-X
Fumoto Valve F-111
2009 Rear Bumper
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post #2 of 13 Old 08-29-2011, 10:20 AM
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#1) Check the hoses where they fit to the axles. They are pretty notorious for cracking there. Pull the hose if it isnt obvious; try the 4WD command. If it stays blowing as it should there's your problem.
#2) Vacuum Solenoid

David
2012 CCSB SRW FX4
2.5" Level, Amp Steps
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post #3 of 13 Old 08-29-2011, 12:04 PM Thread Starter
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Well I finally got a chance to crawl under the truck and take a look. Turns out that both hoses we're cracked at the nipple on the back of the wheel. Hopefully this will get everything back to normal.

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
Zoodad Mod
Delo ELC Coolant
Rotella T6 w/Rev-X
Fumoto Valve F-111
2009 Rear Bumper
Newton Lifts 2.5" leveling kit


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post #4 of 13 Old 09-11-2011, 12:32 PM
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Did your 4 wheel drive light come on when it wasnt working when you switched to 4wd? I lost my 4wd yesterday at the track. Im thinking its electrical since the light doesnt even come on. Fuse is good trying to figure out where to look next.

2005 Ford F250 CCSB 6.0 XLT 4x4

-SCT X3 W/ Innovative and Spartan Tunes
-4" MBRP Turbo Back Exhaust
-MBRP Cat Delete Pipe
-S&B Cold Air Intake
-Amsoil Everywhere
-CAT ELC
-Zoodad Mod
-Edge Insight CS with Pyro
-Sinister Diesel Coolant Filter
-Studded and Deleted
-6.4L Banjo Bolts
-2.5" Top Gun Customz Leveling Kit
-Bilstein 5100 Shocks
-35" General Grabber AT2s

Best track time: 14.1 @ 96MPH
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post #5 of 13 Old 09-11-2011, 12:40 PM
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ESOF (electronic shift on the fly) system file attached. Has all the pinpoint tests you will need to diagnose any issue.
Attached Files
File Type: pdf ESOF.pdf (753.4 KB, 197 views)
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post #6 of 13 Old 09-11-2011, 12:51 PM
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This should help out a lot thanks!!

2005 Ford F250 CCSB 6.0 XLT 4x4

-SCT X3 W/ Innovative and Spartan Tunes
-4" MBRP Turbo Back Exhaust
-MBRP Cat Delete Pipe
-S&B Cold Air Intake
-Amsoil Everywhere
-CAT ELC
-Zoodad Mod
-Edge Insight CS with Pyro
-Sinister Diesel Coolant Filter
-Studded and Deleted
-6.4L Banjo Bolts
-2.5" Top Gun Customz Leveling Kit
-Bilstein 5100 Shocks
-35" General Grabber AT2s

Best track time: 14.1 @ 96MPH
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post #7 of 13 Old 09-11-2011, 06:30 PM Thread Starter
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My 4X4 light always comes on. I thought I might have fixed my problem with finding the cracked hoses going into the back of the hub. I needed to use my 4wd this past weekend and to my surprise no 4wd at the flip of a switch. I rolled the truck backward a little hoping that would help lock it in but it didn't help. So I'm still without the auto 4x4.

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
Zoodad Mod
Delo ELC Coolant
Rotella T6 w/Rev-X
Fumoto Valve F-111
2009 Rear Bumper
Newton Lifts 2.5" leveling kit


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post #8 of 13 Old 09-11-2011, 07:02 PM
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See post #5, download the PDF file and start digging in.
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post #9 of 13 Old 09-12-2011, 09:11 AM
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Im thinking mine is somthing electrical. I checked both the fuses for the 4wd theres a 15A under the dash and a 30A under the hood. Im leaning towards the solenoid on the transfer case since Im getting no light or anything with it.

2005 Ford F250 CCSB 6.0 XLT 4x4

-SCT X3 W/ Innovative and Spartan Tunes
-4" MBRP Turbo Back Exhaust
-MBRP Cat Delete Pipe
-S&B Cold Air Intake
-Amsoil Everywhere
-CAT ELC
-Zoodad Mod
-Edge Insight CS with Pyro
-Sinister Diesel Coolant Filter
-Studded and Deleted
-6.4L Banjo Bolts
-2.5" Top Gun Customz Leveling Kit
-Bilstein 5100 Shocks
-35" General Grabber AT2s

Best track time: 14.1 @ 96MPH
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post #10 of 13 Old 09-12-2011, 08:41 PM Thread Starter
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So after donig a little investigating I've narrowed it down to the drivers side hub. I pulled both hoses off at the hubs and blocked them off. A/C kept blowing through the vents. Then left pass. side hooked up and blocked the drivers side with the same results. Lastly left the drivers side hooked up and pulled the pass. side and blocked it off and the A/C went from vents to defrost. So now what is there an o-ring that I need to replace or the entire hub or what.

Thanks

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
Zoodad Mod
Delo ELC Coolant
Rotella T6 w/Rev-X
Fumoto Valve F-111
2009 Rear Bumper
Newton Lifts 2.5" leveling kit


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