Notices
1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

99 exp electrical?

Thread Tools
 
Search this Thread
 
Old Jan 11, 2014 | 09:47 PM
  #1  
fe8u's Avatar
fe8u
Thread Starter
|
Junior User
Joined: Jun 2003
Posts: 84
Likes: 0
99 exp electrical?

So we have a 99 exp Eddie Bauer Auto 4wd. When the switch is on 4wd not auto it will kick out of 4wd and the dash will get all screwed up, mph all over the place. The 4wd switch does not work. turn the vehicle off, back on a couple times and it will right it self. Could it be the speed sensors on the transfer case, 4wd module? Other? Any ideas will be nice Thanks Chad
 
Reply
Old Jan 12, 2014 | 12:19 AM
  #2  
alloro's Avatar
alloro
Fleet Owner
15 Year Member
Shutterbug
Liked
Loved
Joined: Apr 2008
Posts: 24,322
Likes: 5,132
From: 0,0,1
Club FTE Gold Member
Based on the conditions you've described, I would think the 4WD module is the problem.
 
Reply
Old Jan 12, 2014 | 10:31 AM
  #3  
fe8u's Avatar
fe8u
Thread Starter
|
Junior User
Joined: Jun 2003
Posts: 84
Likes: 0
would it be located on the passenger kick plate area thanks
 
Reply
Old Jan 12, 2014 | 12:05 PM
  #4  
alloro's Avatar
alloro
Fleet Owner
15 Year Member
Shutterbug
Liked
Loved
Joined: Apr 2008
Posts: 24,322
Likes: 5,132
From: 0,0,1
Club FTE Gold Member
It's behind the right side of the instrument panel.

Keep in mind that the GEM is the actual brains for the A4WD system, but the 4WD module is actually just a relay pack. But when any of the relays act up, it doesn't matter what the GEM is telling them to do, so this is why you'll want to start at the 4WD relay pack module.

See the attached PDF for an image of the location.
 
Attached Images
File Type: pdf
4wd Relay Pack.pdf (80.7 KB, 824 views)
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dante827
1999 - 2016 Super Duty
5
Nov 14, 2016 08:26 AM
dcaddi2
1999 - 2016 Super Duty
10
Jul 25, 2011 05:35 PM
agcntry
1983 - 2012 Ranger & B-Series
5
Jul 5, 2008 08:46 PM
beckel
1997 - 2006 Expedition & Navigator
6
Oct 28, 2004 02:38 PM




All times are GMT -5. The time now is 10:26 AM.

story-0
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-1
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-2
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-3
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-4
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-5
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-6
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-7
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-8
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE