online store, message boards, mailing list, pictures, technical information, product directory ford truck information, svt lightning information, f150 information, f-150 information, f250 information
Home Discussion Forums Photo Gallery Product Directory Technical Articles Recalls & TSB's Product Reviews Classifieds Ford & Industry News Event Calendar Advertise with us
F150online Forums



Look for a USED Ford F150
Carsdirect.com

Go Back   F150online Forums > Powertrain & Mechanical > Transmissions
speedometer problem speedometer problem
Register Photo Gallery FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 06-16-2008, 05:44 PM
Member
  
Join Date: Mar 2007
Location: FORT WORTH
Vehicle: 2003 FORD F150
Posts: 39
speedometer problem
well guys a while back my 4r70w went out so i decided to pu a 4r75w but now i am have problems i go about 30ft and the speed tops off and the truck cuts off, my question is do i have to reprogram the computer for the truck to work properly.

Register today or sign-in to remove these ads!
Reply With Quote
  #2  
Old 06-16-2008, 11:15 PM
Senior Member
  
Join Date: Dec 2005
Location: MT. JULIET,TN
Vehicle: 03 4X4 5.4 SCREW
Posts: 2,263
One of the changes in the '75 is a shorter Output Speed Sensor. Don't know if it reads voltage different or not but would think so.
Last edited by torkum; 06-16-2008 at 11:19 PM.
Reply With Quote
  #3  
Old 06-17-2008, 09:58 AM
Member
  
Join Date: Mar 2007
Location: FORT WORTH
Vehicle: 2003 FORD F150
Posts: 39
so would i need to replace the speed sensor
Reply With Quote
  #4  
Old 06-17-2008, 10:52 PM
Senior Member
  
Join Date: Dec 2005
Location: MT. JULIET,TN
Vehicle: 03 4X4 5.4 SCREW
Posts: 2,263
I don't think a 4R70W sensor will fit due to the new design. I would contact a tuner and let him fix it through the PCM.
Reply With Quote
  #5  
Old 06-18-2008, 09:52 AM
Member
  
Join Date: Mar 2007
Location: FORT WORTH
Vehicle: 2003 FORD F150
Posts: 39
do you know of any.
Reply With Quote
  #6  
Old 06-21-2008, 06:25 PM
Senior Member
  
Join Date: Dec 2005
Location: MT. JULIET,TN
Vehicle: 03 4X4 5.4 SCREW
Posts: 2,263
I would recommend finding someone local first and if you can't start reading in the Chips, Tuners, and Programmers section. Lots of opinions in there and I'm not going to open that can of worms here

Reply With Quote
  #7  
Old 06-25-2008, 09:37 AM
Junior Member
  
Join Date: Jun 2008
Posts: 1
speedo problem
I did the same thing. I replaced my 01 4r70w with a 2004 4r70w. The output ring was updated so it now puts out 30 pulses per revolution where the old one only put out 6. The dealer said they cannot flash the ECM for this update. Only tire and gear changes. I didnt see anything where a tuner would allow this either. Any help?
Reply With Quote


Reply

« Previous Thread | Next Thread »
Thread Tools
Display Modes
Linear Mode Linear Mode

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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off
Forum Jump


All times are GMT -4. The time now is 03:50 PM.

F150online - Archive - Top

Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0
 
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
Contact Us Advertising Terms of Use Privacy Statement Jobs Forum Text Archives