After ABS speed wheel sensor ABS light is still on

Tiny
MAGDALENE .T.
  • MEMBER
  • 1997 FORD EXPEDITION
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
My vehicle has the ABS light still on even after I changed the ABS speed wheel sensor. Not only is the light still on but my vehicle is still bucking. It is improving and it’s not as bad as before but the car still bucks and now it wants to stall. Does anyone know what the problem could be? If so please do let me know because I’m at my wits end trying to figure out how to finally fix my vehicle.
Monday, May 20th, 2019 AT 5:47 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,383 POSTS
Welcome to 2CarPros.

First, have you checked to make sure that all sensors are good? You may have more than one bad one. Here is a link that explains how to check them: Check out the diagrams (Below).

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

If you find one is faulty, here is a link explaining how they are replaced:

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

Here are the directions specific to your vehicle for replacement or both the front and rear sensors. The attached pictures correlate with the directions.

FRONT
REMOVAL

1. Disconnect the front brake anti-lock sensor electrical connector.
2. Remove the front disc brake rotor shield.

3. Remove the (A) two front brake anti-lock sensor bolts and the (B) front brake anti-lock sensor.

INSTALLATION

1. To install, reverse the removal procedure.

REAR
REMOVAL

Remove the rear brake anti-lock sensor.
1. Disconnect the electrical connector.
2. Remove the bolt.
3. Remove the rear brake anti-lock sensor.

NOTE: Remove all dirt from mounting surface and sensor to prevent contamination of rear axle lubrication.

INSTALLATION

Clean and inspect the rear brake anti-lock sensor.
1. Clean the axle mounting surface. Use care not to get dirt in the rear axle housing.
2. Inspect and clean the magnetized rear brake anti-lock sensor pole piece.
3. Inspect the rear anti-lock brake control o-ring for damage. Replace if necessary.
4. Lightly lubricate the rear anti-lock brake control o-ring with engine oil.

Rear Brake And Anti-Lock Sensor

Install the rear brake anti-lock sensor.
1. Position the rear brake anti-lock sensor and install the rear brake anti-lock sensor bolt.

NOTE: Do not apply force to the plastic rear brake anti-lock sensor connector.

2. Connect the electrical connector.

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Sunday, April 25th, 2021 AT 2:54 PM

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