Abs light on/Speedometer goes off
Thread Starter
|
New User
Joined: Mar 2010
Posts: 14
Likes: 0
Abs light on/Speedometer goes off
I own a 99 f250 super duty with a v10. Last night when I was leaving the boat launch my abs light came on and then my speedometer stopped working. I pulled off into a gas station and shut down my car, started it back up and the light went off. After about 5 minutes it came back on and the rest of my way home the speedometer would work on and off. Once I got near 55 or 60mph it would flicker down to 0 on the speedo then come back up and it did that until I got home. No idea what causes this. Would it be a sensor or something or is it actually related to my ABS? Any help would be appreciated..thanks
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
Did you dip your rear axle when you launched or retrieved your boat? Your symptoms point toward the vehicle speed sensor (VSS) on top of the rear differential. First thing would be to check the connections for water and/or corrosion. Clean and replace as necessary.
You may also want to check the quality of your rear differential fluid. You don't want water in there.
You may also want to check the quality of your rear differential fluid. You don't want water in there.
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
Did you dip your rear axle when you launched or retrieved your boat? Your symptoms point toward the vehicle speed sensor (VSS) on top of the rear differential. First thing would be to check the connections for water and/or corrosion. Clean and replace as necessary.
You may also want to check the quality of your rear differential fluid. You don't want water in there.
You may also want to check the quality of your rear differential fluid. You don't want water in there.
The symptoms include a programmed shutdown of the instrument panel.
That is a system voltage / battery / alternator problem.
ABS light comes on with low voltage.
Therefore, the first suspect is not the ABS sensor or wiring /corrosion at the pumpkin.
Senior User
Joined: Dec 2009
Posts: 435
Likes: 1
X2. Speedometer and ABS signals are fed from VSS on top of the differential. If no other symptoms are seen, I'd look there first.
Trending Topics
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
The description is not clear.
If it is speedo only failure --- your guess is probably better.
If it is complete panel failure, it is the programmed voltage low shutdown.
The question is, did the whole panel power down?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
I have developed a reputation for my "ghetto truck" on here, and my ghetto fixes (eg my $50 code reader).
So at first, I put up the picture you see below here:
But the avatar was too small, and not enough people realize it is Sanford and Son...
So I went with the current avatar.
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
Then it is the speed sensor.
But just for arguments sake --- charge and load test batteries and alternator output.
Low voltage can cause that sensor(s) to fail.
Thread Starter
|
New User
Joined: Mar 2010
Posts: 14
Likes: 0
hey thanks to everyone for your help. Cleaned all my cables going to the battery and near the speed sensor and light was still on. Got a new speed sensor, put it on and everything is back to normal.. Thanks again!
New User
Joined: Nov 2008
Posts: 6
Likes: 0
I a heavy rain storm my ABS light came on, my speedo stopped working, my cruse stopped working, my odometer stopped working and my comp. miles per gallon indicator stopped working.
I changed out my rear speed sensor and now my speedo works but it jerks (not like before) a lot but seems to give thye correct speed. The ABS light is still on. It does not blink, it just stays on.
I changed out my rear speed sensor and now my speedo works but it jerks (not like before) a lot but seems to give thye correct speed. The ABS light is still on. It does not blink, it just stays on.