Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150
Sign in using an external account
Register Forgot Password?


1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage SPONSORED BY:

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-11-2011, 05:03 PM
ahoop90 ahoop90 is offline
New User
 
Join Date: Dec 2011
Posts: 2
ahoop90 is starting off with a positive reputation.
99 f250 low range light stays on

Both the low range and 4x4 light won't go off in my 99 f250 4x4. Its manual shift 4x4 and i know its in 2wd. The transmission shifts through all gears and is in overdrive by the time i hit 30. It seems like its shifting like the truck is in low range still. Is it possible that the truck thinks its still in low range even though its not?
Reply With Quote
  #2  
Old 12-11-2011, 05:14 PM
Bluegrass 7 Bluegrass 7 is offline
Postmaster
 
Join Date: Sep 2006
Posts: 4,811
Bluegrass 7 has a good reputation on FTE.Bluegrass 7 has a good reputation on FTE.
With a fault present the PCM can still get the signal the trans is in 4L.
This signal changes the shift program.
Reply With Quote
  #3  
Old 12-11-2011, 07:29 PM
ahoop90 ahoop90 is offline
New User
 
Join Date: Dec 2011
Posts: 2
ahoop90 is starting off with a positive reputation.
Quote:
Originally Posted by Bluegrass 7 View Post
With a fault present the PCM can still get the signal the trans is in 4L.
This signal changes the shift program.
Thanks for the reply, any ideas on where to start on finding out whats happening? I'm gonna check fuses and relays first, but any other input would be greatly appreciated.
Reply With Quote
  #4  
Old 12-11-2011, 09:26 PM
Bluegrass 7 Bluegrass 7 is offline
Postmaster
 
Join Date: Sep 2006
Posts: 4,811
Bluegrass 7 has a good reputation on FTE.Bluegrass 7 has a good reputation on FTE.
First thing is to check out the shift linkage to see if the positions are correct.
Put it in 2wd and look at the hardware, then in 4H and look again then 4L look again.
The positions send the signals to the PCM on what to do and engage the tranfer case and front actuator.
The actuator that shifts the transfer case internal power flow to 4L also signals the computer via a dedicated line to change program control..
Unless you go over all this, it can't be guessed at unless your lucky..
Good luck.
Reply With Quote
Old 12-11-2011, 09:26 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150

Tags
1999, 4x4, 89, bronco, deisel, f250, ford, ii, light, low, range, stay, stays, truck, trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 06:59 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup