ABS/Speedometer?
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
ABS/Speedometer?
I have a 99 Ford ranger, 135 thousand miles, 5 speed standard, 3.0 V6 engine.. just today, I noticed the ABS light come on and then I noticed the speedometer bouncing.. The recent repairs I had done on the truck is-shocks all the way around and the front brakes and this was done a month or so ago.. what do you think is the deal?
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
so the ABS Rear Differential is causing the ABS light to come on and the speedo to bounce?
I clicked on the highlited "rear differential" but I did not see anything there in for rear diffential.. does it goes by another name?
Is this a major problem?
I spoke to a transsmission tech who did my clutch system and they checked the sensor and replaced it with a new sensor but thjat was not the problem and he pointed out the rear differential and told me that could be the problem and I asked him what damage was being done in the meantime I am driving it and he told me none..
Truck is running great no noise or anything..
I clicked on the highlited "rear differential" but I did not see anything there in for rear diffential.. does it goes by another name?
Is this a major problem?
I spoke to a transsmission tech who did my clutch system and they checked the sensor and replaced it with a new sensor but thjat was not the problem and he pointed out the rear differential and told me that could be the problem and I asked him what damage was being done in the meantime I am driving it and he told me none..
Truck is running great no noise or anything..
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
The ABS speed sensor is mounted to the rear differential which is the pumpkin-looking thing between the rear wheels. Did the tranny tech change that sensor, or the one on the transmission?
P.S. Those blue highlights are ads, not help links.
P.S. Those blue highlights are ads, not help links.
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
Here are images of my rear diff..
It is obove the rear diff where the tech pointed out what was replaced, the sensor. is that what you were talking about?
http://www.roberttrevino.com/truck.jpg
http://www.roberttrevino.com/truck1.jpg
http://www.roberttrevino.com/truck2.jpg
http://www.roberttrevino.com/truck3.jpg
It is obove the rear diff where the tech pointed out what was replaced, the sensor. is that what you were talking about?
http://www.roberttrevino.com/truck.jpg
http://www.roberttrevino.com/truck1.jpg
http://www.roberttrevino.com/truck2.jpg
http://www.roberttrevino.com/truck3.jpg
Last edited by RTREV64; Jun 9, 2006 at 07:32 AM.
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
Trending Topics
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
So will pull codes give an indication of problem? my mech said if no "engine light on" then pulling codes would not help..
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
You can have "pending" codes stored in the computer, without having a CEL.
Your problem sure sounds like a bad speed sensor.
Are you sure the Tech replaced the speed sensor atop the rear differential, because I don't see any signs in the photos of it having been messed with.
If it's been changed, I suppose the new one could be faulty, as I've seen new parts, bad right out of the box!!!!
Or it could be a bad electrical connector, pins or sockets, wiring, or some other means of corrupting the speed sensors output to the computer, so give the whole system a look-see.
Do you have cruise control, if so, do you have problems with setting it, or does it drop out on it's own when the speed-o acts up????
If you could make loan of a scan-tool, that can monitor live feeds, you could hook it up to monitor the speed sensors out put & see how it's doing while driving.
Just some thoughts to ponder.
Will be interesting to hear what you find the root cause to be.
Your problem sure sounds like a bad speed sensor.
Are you sure the Tech replaced the speed sensor atop the rear differential, because I don't see any signs in the photos of it having been messed with.
If it's been changed, I suppose the new one could be faulty, as I've seen new parts, bad right out of the box!!!!
Or it could be a bad electrical connector, pins or sockets, wiring, or some other means of corrupting the speed sensors output to the computer, so give the whole system a look-see.
Do you have cruise control, if so, do you have problems with setting it, or does it drop out on it's own when the speed-o acts up????
If you could make loan of a scan-tool, that can monitor live feeds, you could hook it up to monitor the speed sensors out put & see how it's doing while driving.
Just some thoughts to ponder.
Will be interesting to hear what you find the root cause to be.
Senior User
Joined: Nov 2003
Posts: 478
Likes: 0
From: ut
I hope I don't add confusion here...do the newer trucks have an electronic speedometer? My 94 has a traditional speedometer cable, which looked okay. When my speedometer started bouncing, I had a dealer send the instrument cluster to a "speedometer shop", which fixed the bounce. (I've worked automotive off-and-on for over 20 years and still can't figure why I'd never heard of a speedometer shop before!!!)
Anyway, disregard all this if your speedometer is electronic...
Anyway, disregard all this if your speedometer is electronic...
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
not acting up yet
well actually he did not replace the speed sensor because he installed it and made no diffrence so he put back the old one, I had the trans tech check it because they worked on my clutch and I was still under warrenty.
When I arrived at Eagle Transmission they had it up on the stand and I was able to go underneath my truck and he pointed out the sensor sitting on top of the diff (pumpkin shaped) and that is what he said he changed but made no diffrence..
so what could it be?
My truck is standard..
No, the speed has not been changing on me while I drive at all or the speedo is moving, after I get up to 30 miles per hour then the needle moves up to the spped I am going, so if I am on the highway it will stay at the speed I am going, coming to a stop the needle drops..
what would that thing be called so I can hook it up myself..
When I arrived at Eagle Transmission they had it up on the stand and I was able to go underneath my truck and he pointed out the sensor sitting on top of the diff (pumpkin shaped) and that is what he said he changed but made no diffrence..
so what could it be?
My truck is standard..
No, the speed has not been changing on me while I drive at all or the speedo is moving, after I get up to 30 miles per hour then the needle moves up to the spped I am going, so if I am on the highway it will stay at the speed I am going, coming to a stop the needle drops..
what would that thing be called so I can hook it up myself..
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
Yet even more pics.. here are pics of the diff, just want to make sure I am on the same page you all are tlaking about..
My mech said the differential could be cluttered with dirt and grime if the new sensor the trans mech put in but no diffrence was made..
http://www.roberttrevino.com/Pic001.jpg
http://www.roberttrevino.com/Pic002.jpg
http://www.roberttrevino.com/Pic003.jpg
My mech said the differential could be cluttered with dirt and grime if the new sensor the trans mech put in but no diffrence was made..
http://www.roberttrevino.com/Pic001.jpg
http://www.roberttrevino.com/Pic002.jpg
http://www.roberttrevino.com/Pic003.jpg
Last edited by RTREV64; Jun 13, 2006 at 05:59 PM.
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
I was suggesting you hook up a scan tool thats able to read PID's, to the vehicles diagnostic connector, then drive & monitor the vehicles speed reading coming from the speed sensor.
If it's corrupt, the speed value will hang up or jump around, like the speedometer.
The fact that the speed-o is acting up & the ABS light is on, suggests somthing is wrong with the speed sensor, or it's wiring.
Speed sensors are a common failure.
I don't know why a new speed sensor didn't fix it, maybe the new speed sensor was bad too!!!!
Did the speed-o behave exactly the same way with the new sensor???? Did the tranny shop or your Tech hook up a scan tool to monitor the new speed sensors output while they had it installed????
Did the ABS light go out with the new sensor installed????
What ABS trouble code are you getting????
If it's corrupt, the speed value will hang up or jump around, like the speedometer.
The fact that the speed-o is acting up & the ABS light is on, suggests somthing is wrong with the speed sensor, or it's wiring.
Speed sensors are a common failure.
I don't know why a new speed sensor didn't fix it, maybe the new speed sensor was bad too!!!!
Did the speed-o behave exactly the same way with the new sensor???? Did the tranny shop or your Tech hook up a scan tool to monitor the new speed sensors output while they had it installed????
Did the ABS light go out with the new sensor installed????
What ABS trouble code are you getting????
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 84
Likes: 0
From: Garland
what would this scan tool be called?
Ok, lets say it is the wiring and not the sensor.. what does that mean in terms of how extensive would that be?
ABS trouble code?
So you saying, that it is not the differential?
Ok, lets say it is the wiring and not the sensor.. what does that mean in terms of how extensive would that be?
ABS trouble code?
So you saying, that it is not the differential?