Ford Truck Enthusiasts Forums

Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

Speed Sensor

Thread Tools
 
Search this Thread
 
Old Aug 13, 2013 | 08:25 PM
Share
  #1  
Blankie's Avatar
Blankie
Thread Starter
|
Junior User
Joined: Feb 2006
Posts: 93
Likes: 0
From: Fairview, NC
Speed Sensor
I have a 96 F350 CC E4OD. Replaced speed sensor in rear end now Speedo fluctuates 2-5 mph. I have installed two sensors, the first one did not seal, speedo did same thing. Thanks for any help.
 
Reply
0
Old Aug 13, 2013 | 08:49 PM
Share
  #2  
95350PS's Avatar
95350PS
Senior User
Joined: May 2012
Posts: 357
Likes: 0
I've got same issue bud....before I replaced it speedo didn't bounce at all now speedo bounces and tranny shifts like crap.......where did you buy the sensors from? Mine was from the ford dealership
 
Reply
0
Old Aug 13, 2013 | 10:41 PM
Share
  #3  
ReBilld's Avatar
ReBilld
Hotshot
10 Year Member
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
Check the wiring going to the VSS real good. It can get corroded and moving it around changing the sensor could have caused a problem. Just a thought.
 
Reply
0
Old Aug 13, 2013 | 10:51 PM
Share
  #4  
95350PS's Avatar
95350PS
Senior User
Joined: May 2012
Posts: 357
Likes: 0
I checked it up to where it goes into the rest of the rear harness and it was all good
 
Reply
0
Old Aug 14, 2013 | 09:36 AM
Share
  #5  
Blankie's Avatar
Blankie
Thread Starter
|
Junior User
Joined: Feb 2006
Posts: 93
Likes: 0
From: Fairview, NC
I got the Sensor from O'Reilly Auto Parts.

Jim
 
Reply
0
Old Aug 14, 2013 | 11:26 AM
Share
  #6  
madpogue's Avatar
madpogue
Lead Driver
20 Year Member
Liked
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Also check the tone ring in the diff. Crud between the notches can throw the sensor off. I've heard even foreign matter in the diff fluid can do it.
 
Reply
0
Old Aug 14, 2013 | 01:37 PM
Share
  #7  
95350PS's Avatar
95350PS
Senior User
Joined: May 2012
Posts: 357
Likes: 0
I would say try a motor craft sensor but as of now I can't be sure that they are the best either......I'm taking my truck in to a guy that all he does is build HD trannys for Cummins and powerstroke sled pullers to have him check mine all out wiring and all he said its free because he knows one day I'll be back down there to replace my stock tranny with a built unit
 
Reply
0

Trending Topics

Old Aug 15, 2013 | 05:18 PM
Share
  #8  
Blankie's Avatar
Blankie
Thread Starter
|
Junior User
Joined: Feb 2006
Posts: 93
Likes: 0
From: Fairview, NC
Got a wiring pigtail from Ford and installed today. No Help, still same prob. It does seem to get worse at higher speeds.

I think I am going to change Rear End oil and check tone Ring. Is any one using Synthetic in Rear Gear. If so what.

Jim
 
Reply
0
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Aug 15, 2013 | 05:34 PM
Share
  #9  
95350PS's Avatar
95350PS
Senior User
Joined: May 2012
Posts: 357
Likes: 0
I used synthetic Lucas in mine just FYI I'm having similar issues and after the change it didn't help
 
Reply
0
Old Aug 15, 2013 | 06:53 PM
Share
  #10  
kawamatt2's Avatar
kawamatt2
Cross-Country
Joined: Mar 2008
Posts: 98
Likes: 0
Check the air gap between the sensor and tone ring. Max spec is 0.045". Mine was at max spec and I sanded down the mounting face of the sensor to bring the gap to 0.020" and the needle is very solid now.
 
Reply
0
Old Aug 15, 2013 | 07:02 PM
Share
  #11  
95350PS's Avatar
95350PS
Senior User
Joined: May 2012
Posts: 357
Likes: 0
Originally Posted by kawamatt2
Check the air gap between the sensor and tone ring. Max spec is 0.045". Mine was at max spec and I sanded down the mounting face of the sensor to bring the gap to 0.020" and the needle is very solid now.
Wow great info I never thought about gap spec I hope that's my problem lol that would be glorious haha
 
Reply
0
Old Aug 15, 2013 | 07:48 PM
Share
  #12  
RÖENTGEEP's Avatar
RÖENTGEEP
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Club FTE Silver Member

Question
Originally Posted by kawamatt2
Check the air gap between the sensor and tone ring. Max spec is 0.045". Mine was at max spec and I sanded down the mounting face of the sensor to bring the gap to 0.020" and the needle is very solid now.
Good but I have questions: How do you meassure that air gap? Do you have to pull the rear diff cover?

Originally Posted by 95350PS
Wow great info I never thought about gap spec I hope that's my problem lol that would be glorious haha
Yeap good info. Rep sent.

 
Reply
0
Old Aug 27, 2013 | 07:35 PM
Share
  #13  
Blankie's Avatar
Blankie
Thread Starter
|
Junior User
Joined: Feb 2006
Posts: 93
Likes: 0
From: Fairview, NC
Finally got back to my problem. BINGO!!!! Air gap fixed it, took about .015 off of mounting flange speedo is rock solid. Thanks Kawamatt2 Great info.

Jim
 
Reply
0
Old Aug 27, 2013 | 08:08 PM
Share
  #14  
RÖENTGEEP's Avatar
RÖENTGEEP
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Club FTE Silver Member

Question
Originally Posted by RÖENTGEEP
Good but I have questions: How do you meassure that air gap? Do you have to pull the rear diff cover?



Yeap good info. Rep sent.

Originally Posted by Blankie
Finally got back to my problem. BINGO!!!! Air gap fixed it, took about .015 off of mounting flange speedo is rock solid. Thanks Kawamatt2 Great info.

Jim

Again I ask, how do you meassure or fix the air gap?

 
Reply
0
Old Aug 27, 2013 | 08:11 PM
Share
  #15  
95350PS's Avatar
95350PS
Senior User
Joined: May 2012
Posts: 357
Likes: 0
I would guess cover has to be removed but I just filed off a little at a time and tested till it was a solid speedo needle
 
Reply
0



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 03:46 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE