4x4 not working..? - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 02-20-2012, 06:15 PM Thread Starter
Premium Member
 
Join Date: Oct 2010
Location: Roswell, NM
Posts: 220
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
4x4 not working..?

Well I was out hunting this weekend and went to use my four wheel drive and it did not work. I turned the switch to 4 high and the front wheels did not engage. I had to LOCK the front hubs in instead of having them in AUTO to get the four wheel drive to work. Is there a vacuum that engages the hubs in AUTO, where do I need to start checking? Thank you.

Will

2004 F-350 Lariat Crew Cab FX4, Dark Grey, T3 Front and Rear replacement bumpers, Fumoto valve, Diamond plate running boards, Zoodad mod, Dieselsite coolant filter w/ ELC, Blue Spring Mod, LED cab lights, Edge Insight CS, SCT SF3, PHP FICM/ECM rollback, Sinister EGR Delete, 6.4 Banjo Bolts, ARP head Studs, Zone Offroad Leveling Kit, CCV Mod, Straight Exhaust, S&B intake, Atlas 40, 295/75R16 BFG,
fishmanwill is offline  
post #2 of 7 Old 02-20-2012, 06:26 PM
Compression Ignition Addict
 
F250SixOH's Avatar
 
Join Date: Nov 2011
Location: Concord, NC
Posts: 1,035
Thanks: 0
Thanked 15 Times in 13 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
On the passenger side of the engine bay there is a vacuum solenoid. Turn your key to on and make sure the pump runs first. Then use a vacuum gauge and connect it after the solenoid to see if the solenoid works correctly when switching to 4x4. You can also check the lines to the hubs with a vacuum pump to see if one of the seals in the hubs are leaking. The vacuum solenoid tuned out to be the culprit on my truck.
F250SixOH is offline  
post #3 of 7 Old 02-20-2012, 06:31 PM Thread Starter
Premium Member
 
Join Date: Oct 2010
Location: Roswell, NM
Posts: 220
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
on the passenger fender wheel well? What else does the vacuum solenoid operate? Thanks,

Will

2004 F-350 Lariat Crew Cab FX4, Dark Grey, T3 Front and Rear replacement bumpers, Fumoto valve, Diamond plate running boards, Zoodad mod, Dieselsite coolant filter w/ ELC, Blue Spring Mod, LED cab lights, Edge Insight CS, SCT SF3, PHP FICM/ECM rollback, Sinister EGR Delete, 6.4 Banjo Bolts, ARP head Studs, Zone Offroad Leveling Kit, CCV Mod, Straight Exhaust, S&B intake, Atlas 40, 295/75R16 BFG,
fishmanwill is offline  
post #4 of 7 Old 02-20-2012, 10:43 PM
Compression Ignition Addict
 
Join Date: Oct 2010
Location: Glasgow, Montana
Posts: 433
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
would like to know the answer to that as well!! Coach

SOLD 2005 F-350 CC SB 4x4 6.0 Auto NEW 2012 Dodge Ram 3500 Laramie, 6.7 Cummins, Auto, 4x4, LB

url=http://www.myarmedforces.com] [/url]
Coach73 is offline  
post #5 of 7 Old 02-21-2012, 05:54 AM
War is the answer!


 
WarChild's Avatar
 
Join Date: Feb 2011
Location: Daytona Beach, Florida
Posts: 5,499
Thanks: 218
Thanked 77 Times in 32 Posts
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
Feedback Score: 2 reviews
Doesnt that work the AC valve on the radiator hose too?

White 04 F350 Lariat SRW/CC/LB/FX4 227,XXX+
Studs/BPD58V FICM Atlas40/BPD oil cooler/waterpump/7.3 fan
Edge insight CTS EGT/Turbo timer/FP SCT with ? Tune
Powermax w/KC billet wheel Warren 175/30%
5-8" MBRP Off Road Turbo Back/harpoon
2" Leveling/33' BFGATKO
ELC/PMM Coolant filter
aFe Stage2/EGR Delete


Semper Fidelis (Always Faithful) is the motto of the Corps. That Marines have lived up to this motto is proved by the fact that there has never been a mutiny among U.S. Marines.
WarChild is offline  
post #6 of 7 Old 02-21-2012, 06:10 AM
Compression Ignition Addict
 
F250SixOH's Avatar
 
Join Date: Nov 2011
Location: Concord, NC
Posts: 1,035
Thanks: 0
Thanked 15 Times in 13 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
It controls your defroster or something like that if I remember right. If you switch to 4x4 and the only thing that blows air out is the defroster, you have a vacuum issue. Also can happen all the time if you had a leak before the solenoid I guess.

Last edited by F250SixOH; 02-21-2012 at 06:14 AM.
F250SixOH is offline  
post #7 of 7 Old 02-21-2012, 08:21 AM
Premium Member
 
Term3's Avatar
 
Join Date: Feb 2011
Location: Edmonton, Alberta Canada
Posts: 3,957
Thanks: 0
Thanked 34 Times in 32 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 1 reviews
If your heater will only blow on defrost then you have a vacuum leak. Most of the time it's on the tubing going to the hubs. There are stainless steel braided ones you can buy but I don't recall who sells them. I just remember its a popular supplier.

SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.
Term3 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome