4X4 NOT ENGAGING - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 02-08-2014, 12:42 PM Thread Starter
Powerstroke.org Rookie
 
7.3 Trever's Avatar
 
Join Date: Oct 2010
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
4X4 NOT ENGAGING

Hey guys I have a 99 f250. I have warn manual locking hubs because I didn't like the vacuum idea so that isn't an issue however I have the electronic switch and my 4wd will not engage. When I switch it on I am getting no light on dash however when I turn my key on before it starts the 4x4 light flickers so the light does work. Any ideas? I replaced the relays so that issue is ruled out. Thanks guys!
7.3 Trever is offline  
post #2 of 6 Old 02-09-2014, 01:21 PM
Powerstroke.org Fanatic
 
delta99's Avatar
 
Join Date: Oct 2013
Posts: 111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 6
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
From owner's manual..."To prevent damage, the electronic shift 4WD system is designed
to allow up to 45 seconds before the shift command is performed."

Make sure you wait long enough. You also may have to move the vehicle before it will actually engage.

If it still won't work...there are 2 fuses which are related to the ESOF. Under dash #28, under hood #17. Check these first. If they are good, turn your key on, but don't start the engine. Wait a few seconds for the fuel pump and vacuum pump to kick off. Then turn the switch from 2 wheel to 4 high. You should hear the shift motor in the transfer case click as it engages. If not, your dash switch or the shift motor may be bad. Find a dirt patch and turn your wheel full lock, and drive ahead slowly. If the truck shimmies from side to side as you are turning, you ARE in 4 wheel, and the indicator switch in the transfer case is no good. You must be STOPPED, have foot on brake, AND for auto trans be in neutral, for manual trans hold clutch in for it to shift into 4 low



2000 F250 Super Duty, 4x4, 7.3, 6 speed manual, 4" straight exhaust, 6637 air filter, superwinch hub locks, zoodad, foil delete, AIH delete, power pedal, autometer gauges, 2.5" leveling kit, 260,000
delta99 is offline  
The Following User Says Thank You to delta99 For This Useful Post:
Colin7.3 (02-16-2014)
post #3 of 6 Old 02-10-2014, 06:15 PM
Serving Our Country!
 
alaskan155's Avatar
 
Join Date: Mar 2013
Posts: 1,043
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Thanks: 9
Thanked 35 Times in 34 Posts
Feedback Score: 1 reviews
Quote:
Originally Posted by delta99 View Post
From owner's manual..."To prevent damage, the electronic shift 4WD system is designed
to allow up to 45 seconds before the shift command is performed."

Make sure you wait long enough. You also may have to move the vehicle before it will actually engage.

If it still won't work...there are 2 fuses which are related to the ESOF. Under dash #28, under hood #17. Check these first. If they are good, turn your key on, but don't start the engine. Wait a few seconds for the fuel pump and vacuum pump to kick off. Then turn the switch from 2 wheel to 4 high. You should hear the shift motor in the transfer case click as it engages. If not, your dash switch or the shift motor may be bad. Find a dirt patch and turn your wheel full lock, and drive ahead slowly. If the truck shimmies from side to side as you are turning, you ARE in 4 wheel, and the indicator switch in the transfer case is no good. You must be STOPPED, have foot on brake, AND for auto trans be in neutral, for manual trans hold clutch in for it to shift into 4 low
if none of that works, time to swap in a manual transfercase

2002 F250 7.3/JW Tow master 4r100 200k miles
Mods:explorer heater valve, WR GP relay, RiffRAff boots, lariat overhead console, Hydra chip, 6637 mod, 6.0 cooler, AIH delete and isspro2 trans, egt, and boost gauges. 92 gallon aux tank with a total capacity of 130gallons, 1800 mile range , 4" MBRP straight Piped. 2" Warrior shackles
alaskan155 is offline  
post #4 of 6 Old 02-10-2014, 07:41 PM
Premium Member
 
Macon's Avatar
 
Join Date: Jun 2012
Posts: 3,804
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 3
Thanked 22 Times in 22 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by delta99 View Post
You must be STOPPED, have foot on brake, AND for auto trans be in neutral, for manual trans hold clutch in for it to shift into 4 low
^^That's the most common solution.

There are also two relays under the hood. One, or both, may be bad.

2002 F250 CCSB 4x4
PHP Phoenix, John Woods VB, NUC bypass, 6637

"No country can be called free which is governed by an absolute power;
and it matters not whether it be an absolute royal power or an absolute
legislative power, as the consequences will be the same to the people."

--Thomas Paine, Four Letters on Interesting Subjects, 1776
Macon is offline  
post #5 of 6 Old 02-16-2014, 07:41 AM
Compression Ignition Addict
 
Colin7.3's Avatar
 
Join Date: Feb 2011
Location: Loudonville OH
Posts: 1,341
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 47
Thanked 23 Times in 20 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by delta99 View Post
From owner's manual..."To prevent damage, the electronic shift 4WD system is designed
to allow up to 45 seconds before the shift command is performed."

Make sure you wait long enough. You also may have to move the vehicle before it will actually engage.

If it still won't work...there are 2 fuses which are related to the ESOF. Under dash #28, under hood #17. Check these first. If they are good, turn your key on, but don't start the engine. Wait a few seconds for the fuel pump and vacuum pump to kick off. Then turn the switch from 2 wheel to 4 high. You should hear the shift motor in the transfer case click as it engages. If not, your dash switch or the shift motor may be bad. Find a dirt patch and turn your wheel full lock, and drive ahead slowly. If the truck shimmies from side to side as you are turning, you ARE in 4 wheel, and the indicator switch in the transfer case is no good. You must be STOPPED, have foot on brake, AND for auto trans be in neutral, for manual trans hold clutch in for it to shift into 4 low
fuses are good. relays are new. switch is new. tcase motor is new.

tried the waiting. only way to get it in 4wd is to pull the relays and use a jumper wire to make the shift motor work.

iv ran out of options to try and replace things.

Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
E99 7.3 6spd 4x4 6637, 4" straight pipe, 365,000 miles
"wear your high mileage as a badge of honor"

04 GMC 2500 4x4 Duramax/Allison
Colin7.3 is offline  
post #6 of 6 Old 02-18-2014, 12:50 PM
Member
 
Join Date: Jun 2011
Location: Jupiter
Posts: 43
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I read somewhere that the 2003s are different than other years but I had the same problem and found that my 4x4 Module behind the glovebox was corroded. I replaced it with the one below and it solved the problem.

http://www.ebay.com/itm/2003-Ford-Su...af75a1&vxp=mtr

208 F250 6.4 Lariat

4" Downpipe Back, AFE Dry Intake, EGR Block Plates, SCT Livewire TS with PIP tuning, 2.5" Level, 35 Toyo M/T

----SOLD---
2003 F250 7.3 XLT
6637, 4" Exhaust, 50 hp tune, Irate Regulated Return, HPx, Bellowed Up-Pipes, Boost Trans and EGT Gauges, 2.5" Level Kit, Sky Jacker Dual Stabilizers, 305/70r16 Fierce Attitude M/T
Nolooseends 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