Question about 1991 Ford Econoline

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ABS Light/ Speedo erratic/ Low Speed Tranny Slippage

My Ford book says these can all be tied to the ABS Sensor.  Is this true?

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ABS should not effect the speed of the car or truck only if your car has traction control this will effect speed by slowing the motor down. And also will effect your trans on shifting.

Posted on Jul 04, 2009

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Posted on Jan 02, 2017

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How to check speed sensor on 1999 Subaru forester


if abs is failed light off speed sensor is fine. if on and no speedo then its the sensor. if no abs light and no speedo then the problem is from the abs unit to the ecu to the speedo and any other device in line, like sunroof etc as the signal is though there. also to rule out speed. speedo should jump a bit back when power is turned on from ignition if not then its between the connection to the dash and speedo. sensor is on passide for speedo and abs.

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1998 dodge Dakota Ok so I just got this truck and when I got it the abs light and brake light were on plus the speedo doesn't work sometimes I replaced the rear speed sense on the diff but the lights...


If the red brake light and the ABS light are both lit up on the dashboard, do NOT drive the vehicle. It indicates a major malfuntion with the brake system. The red light indicates low brake fluid or the parking brake engaged. The yellow ABS without the red light, indicates a problem the computer found and it disables the ABS system while still having conventional brakes. Since both are lit, it needs the brake system repaired. What you replaced on the rear diff was probably the rear ABS sensor. The vehicle speed sensor for the speedometer should be located on the rear of your transfer case if you have 4WD, or on the rear of the trans if you have 2WD.

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Abs light stays on also speedo stops working


Hi, I am new to the website. I am an automotive technitian. If the ABS light is on ,and the speedo wont work, your vehicle speed sensor (vss) is likely the cause! The ABS system depends on knowing the individual wheel speed and the overall vehicle speed in order to properly operate. The fact that your speedo also is out tells me that either the sensor is bad or there is a wiring problem. The ABS light will stay on and will probably be in "limp mode" until the problem is solved.....if you live in a snowy or icy place be careful because it probably wont work! If I am right, even a simple code scanner like an auto parts store has for free use will show a vss code since it will affect other systems in the car such as shifting points and fuel trim. I have no history on your car...and dont even know the type of car it is so I hope this has been helpful!!

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Speed sensor light flashing ,awd drive seems to not shift properly, car drives erratic as if the shift cannot decide what wheel should or shouldn't be getting power ,this is at lower...


Speed sensor light, do you mean check engine light? I'm a retired (2004) Ford dealer tech and I have no memory of any light called a speed sensor light.

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FORD Ranger ABS/OD problem


This might help a ton and save you money! So easy to fix, this video sounds like the same problem described! ABS light on, o/d flashing, check engine light on, tranny seems to be having issues, speedometer stops working. All fixed as described by the first answer james_hust , not tying to take your mojo but the video shows you what you need to do.

Dec 02, 2009 | 2000 Ford Ranger SuperCab

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ABS light & brake light on, problems with speedo working properly


The rear wheel speed sensor is the most common problem on those trucks and will do what you are talking about. It is located at the top of the rear axle in the center. It picks up it's signal from a tone ring on the diff inside! If a tranny input or output sensor is bad then the tranny won't shift properly!

Aug 13, 2009 | 1998 Dodge Dakota

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2000 powerstroke abs light on speedo not working od light flashes


ok one thing to do is scan codes to see which sensor is not reading. then go to it with a scanner hooked up. youre gonna be able to see live moh parameters or windows to see live data anyhow access the rear which isnt working. jack up truck safely put in drive then proceed tothe rear sensor wire. u can do this at any sensor that isnt reading. u then look at the mph window in scan tool an watch it while u wiggle the affected sensor wire goin to the harness. watch for jumps an droputs of the mph parameter while wiggling sensor wires from sensor all the way to the harness. thats how its done looking for broken wires. food luck hope this helps

Oct 22, 2017 | 2000 Ford F250 Super Duty Crew Cabs

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F-250 dash


Check you speed sensor on the transmission, Overdrive wont work without speed sensor, nor will ABS, or Speedometer.. it all boils down to a speed sensor.

Oct 12, 2008 | 2000 Ford F250 Super Duty Crew Cabs

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I have a 1989 s-10.The parking brake light blinks six times,pauses then flashes again.I was wondering what trouble code that would be???Thanks.


RWAL Fault codes
Codes for Dodge RWAL, Ford RABS and GM RWAL applications are similar but have a few differences:
  1. Should not occur (replace the controller if it does)
  2. Open isolation valve circuit or defective ABS module
  3. Open dump valve circuit or defective ABS module
  4. Grounded or closed RABS or RWAL valve switch
  5. Excessive actuations of dump valve during ABS braking
  6. Erratic speed sensor signal
  7. Shorted isolation valve or defective ABS module
  8. Shorter dump valve or defective ABS module
  9. High resistance or open speed sensor circuit (resistance should be 1000 to 2500 ohms)
  10. Low speed sensor resistance (Dodge & Ford only)
  11. Open speed sensor circuit (GM only)
  12. Stop lamp switch circuit (Dodge & Ford)
  13. ABS module speed processor (Dodge & Ford only)
  14. ABS module program (Dodge & Ford only)
  15. ABS module RAM memory failure (Dodge & Ford)
To manually clear a stored fault code on GM and some Dodge trucks with RWAL, remove the ABS fuse or disconnect the battery for 5 seconds. Ford RABS codes will automatically clear when the ignition is turned to the off position.

Aug 26, 2008 | Chevrolet S 10 Cars & Trucks

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