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New crisis.....ABS light on

Discussion in 'Stock 1995 - 2001 Explorers' started by herebyproxy, August 6, 2011.

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    1. herebyproxy

      herebyproxy Active Member

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      After several months I have finally gotten the CEL staying out now. While driving this morning the ABS light came on......where do I start?
       
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    3. fixt

      fixt Active Member

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      I would start with a code reader. Maybe your local auto store such as Advance or Autozone will read the ABS codes for you for free.
      That will point you in the right direction which is probably a speed sensor, but you need the codes to know for sure.
       
    4. Wade99

      Wade99 New Member

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      I've read here it can be as easy as pulling the sensor off wheel assembly and cleaning exciter ring and contacts. Mine is on too.
       
    5. herebyproxy

      herebyproxy Active Member

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      I'll get it read tomorrow

      I'll keep y'all informed....
       
    6. timlagios

      timlagios New Member

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      sounds like a possible wheel hub
       
    7. chapsdeva

      chapsdeva Active Member

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      More than likely it's your rear ABS sensor....common problem on these trucks. It is located on top of the rear differential and is a fairly quick and easy fix. There are quite a few write ups on this site about this.
       
    8. Steeda90GT

      Steeda90GT Active Member

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      +1

      9 out of 10 times this is the issue. A new sensor is only $8, so it's worth the gamble. It's also really easy to do (takes about 5 min)
       
    9. joe doe

      joe doe Active Member

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      another +1
      this is almost always the issue. i am having the same issue on my ford van .waiting on the part right now .
       
    10. celly

      celly disturber of the peace

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      I'm dealing with the same thing right now.

      Codes:

      C1230
      C1102

      F85Z9E731AB is the Ford part # for rear sensor. I got an OEM one the other day. I'm swapping it out this weekend. I'm hoping that's all it is (seems to be pretty common as you said).
       
    11. Joe Dirt

      Joe Dirt Explorer Addict

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      Brakes are for puss... er... just kidding! :D

      +88 on the rear ABS sensor... :thumbsup:
       
    12. mweiss

      mweiss Active Member

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      Must be an epidemic.. For a year or so, my CEL was on, and last month the ABS light came on, and the CEL has been off.. I'm a bit perplexed by this.. is OBD unable to display more than one fault at the same time, or did the bulb burn out for the CEL?
       
    13. Steeda90GT

      Steeda90GT Active Member

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      Another thing to add - pep boys (any other auto store) doesnt do free ABS scans. They only do OBD II (for check engine light only)

      So before you pay a shop to diagnose an ABS light issue, def try the rear sensor.
       
    14. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Rear dif sensor +1
      I had abs light on and took a stab in the dark, and everyone here was correct. Sensor is quick and easy to change. Deffinately start there in your troubleshooting.
       
    15. celly

      celly disturber of the peace

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      To all you wannabe members out there on the fence about an Elite membership, consider how much money the site can save you. I don't even want to think what the book labour rate would be to swap out one of these sensors, but it's probably a lot more than even one year of Elite membership.

      Off soapbox. ;)

      I swapped mine out this morning. No ABS light anymore. :thumbsup:

      I used a OEM part with part # mentioned previously.

      A few things that helped me:

      -Jacked up the rear (on stands on course) for extra clearance.

      -Lowered the spare (but didn't remove it....just moved the wheel off to the side a bit).

      -Disconnected the old sensor in place, attached the wiring to the new sensor and let it dangle.

      -I used a 10 mm socket in a 1/4" handle. I had to reach around a bit the find the bolt holding the sensor in place. Came out quite easily.

      -Sensor seemed "stuck" at first, but jiggling it around a bit loosened it quickly.

      -Slid new sensor in place, tightened it down.

      -Started the car....ABS light stayed on as part of the starting routine, but it quickly went off and stayed off. :)

      Gotta love EF.

      I was lucky that I got the ABS code read for free. The light came on after I was getting some other unrelated work done by a mechanic. Because it seemed too coincidental that code would come on after we pulled out of the shop, he read the code for me for free.

      Turns out, the sensor malfunction was coincidental. :D
       
    16. herebyproxy

      herebyproxy Active Member

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      Replaced rear sensor

      ABS light off.....yipeeeeeee
       
    17. Steeda90GT

      Steeda90GT Active Member

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      :thumbsup:

      Glad to hear! This site is awesome :D
       
    18. Steeda90GT

      Steeda90GT Active Member

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      On a side note: I actually purchased my Explorer for $300 cheaper because of the ABS light being on.
       
    19. mweiss

      mweiss Active Member

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      SO what about the ABS light cancelling the check engine light? For a year, I had a CEL, but when the ABS came on a week or so ago, the CEL went out, permanently. I can't imagine my engine problem cleared itself up after a year coincidentally. Any ideas?
       
    20. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Coincidental. I could be wrong, but I'm pretty sure abs stuff is on a completely different computer brain from check engine stuff.
       
    21. Steeda90GT

      Steeda90GT Active Member

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      That's my understanding too...hence the reason why you need two different code readers. Plus, at one time I had both lights on.
       
    22. LONO100

      LONO100 Well-Known Member

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      so by the ABS sensor, you are all referring to the little sensor with thte rubber end that is on the top of your rear diff like the one i have pictured in this link http://www.explorerforum.com/forums/showthread.php?t=329092 (not the part in the bag)?

      i was sold a 20 tooth gear in the bag by my ford dealer but when i got home i found out this part is not compatible with my truck. i have a 03 SPORT TRAC XLT and found out my ABS sensor and speedo are the same thing (which is the greasy piece in the picture on the link i left above).

      my ABS light came on about a week after i slapped some 33"s on my rig. i noticed that my tranny was shifting a little late and my cruise control was acting funny too. i figured the bigger wheels were throwing off the speedo and later confirmed that by hitting the freeway and using the GPS on my smart phone. found out my speedo was off by about 3 MPH. so i went to my ford dealer to get my speedo problem fixed, and they sold me this little 20 tooth plastic speedo gear for about 5 bucks, and told me the ABS sensor was located on the rear calipers but it turns out this was all wrong. the little sensor i pulled from the top of my diff was both the ABS and the speedo sensor.

      so my questions are:
      by ABS sensor, you are referring to that little piece that is on the top of the diff that has the little rubber end on it (the one i have pictured in the link)?

      if so, do i try to by a replacement ABS/speedo sensor first before i try to get someone to reprogram the speedo with an NGS?

      will replacing the speedo sensor fix my speedo being off by 3 MPH?

      thanks fellas.
       
    23. joe doe

      joe doe Active Member

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      advance auto read my abs codes for me .i need a new left front wheel sensor .
      call around your part stores and see who can read abs codes for free for you .
       
    24. celly

      celly disturber of the peace

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      Your photo shows an identical part to what I replaced this past weekend. I've seen it referred often as an "ABS Sensor" and a "Speed Sensor". I didn't think it was a "speedo gear" too, but I may be wrong. My understanding is that it measures speed data to feed back to the ABS system. When the sensor dies, your ABS system is shut down until it is replaced.

      I saw no adverse impact on my speedo or odometer when my ABS light was on.
       
    25. joe doe

      joe doe Active Member

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      your speedo gear is in your transmission .
       
    26. celly

      celly disturber of the peace

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      Are you sure about that? I don't know the answer, but have heard differently in the past.
       

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