Abs!!!!!!
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Senior User
Joined: Dec 2007
Posts: 147
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From: Lebanon, Oregon
Abs!!!!!!
OK guys, Im stumped! I have an ABS light problem, speedo doesnt work, OD light on shift lever blinks and no cruise. I replace the speed sensor in the diff and that didnt take care of it. the trans shifts fine no problems there. I took it to a garage and had them scan it. scanner says "Does not detect Speed Sensor" and ABS fault also detected a KAM(not cam shaft) fault code too. Im stumped, any clues or ideas???????????????????????
By the way ita a 199 f250 4x4 powerstroke
By the way ita a 199 f250 4x4 powerstroke
Posting Guru
Joined: Feb 2009
Posts: 1,325
Likes: 4
From: Blaine, TN
if the sensor was somehow not seated all the way/or the pickup was somehow too far from the sensor then yes. But if the bearings were to be so bad for it not to get a reading, you would definitely know it.
I would start with checking the wiring from the sensor, as much of it as you can for cuts/kinks/chaffing/frays and all that good stuff.
I would start with checking the wiring from the sensor, as much of it as you can for cuts/kinks/chaffing/frays and all that good stuff.
Posting Guru
Joined: Feb 2009
Posts: 1,325
Likes: 4
From: Blaine, TN
The sensors on the front wheels are soley for ABS function only IIRC, if something was to happen to either of the front 2, it would only light up the ABS light. It wouldnt affect the speedo or OD light like the rear would.
Thread Starter
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Senior User
Joined: Dec 2007
Posts: 147
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From: Lebanon, Oregon
No speed sensor detected, and ABS failure
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Post Fiend
Joined: Nov 2007
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From: Payson, AZ
The new VSS could have been bad out of the box. That is normally the fix with the symptoms you have.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
If you have the numbers for the codes they pulled, we could look them up for you and tell you what the manual recommends checking. (The codes are listed by number in the manual)
Thread Starter
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Senior User
Joined: Dec 2007
Posts: 147
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From: Lebanon, Oregon
he didnt give me the number codes, i could go back tomorrow and get them
Lead Driver
Joined: Jun 2007
Posts: 7,760
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From: Hampton, Maryland.
I would think chaffed wire somewhere else. I believe Scott had this issue before. I know someone did. I remember them mentioning a very very small crack in the wire pretty far away from the sensor.
Elder User
Joined: May 2008
Posts: 860
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From: Liberty Lake, WA
While live tuning in March, I had an ABS light on that has been on for awhile, but I ignored it. But I knew what the problem was. One of my front tires rubbed a hole in the FRONT left sensor cable. While Jody was with me, he was trying to change the shift points but the computer would not let him and we could not figure out why. Jody calls John Wood and explains what was happening. John Wood says the front ABS sensor are a Speed sensor and said to change it out. I went to Ford and purchased a new ABS sensor assembly and changed it. After that, my ABS light went off and Jody was able to make the changes without any problems.
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Senior User
Joined: Dec 2007
Posts: 147
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From: Lebanon, Oregon
That is not correct..
While live tuning in March, I had an ABS light on that has been on for awhile, but I ignored it. But I knew what the problem was. One of my front tires rubbed a hole in the FRONT left sensor cable. While Jody was with me, he was trying to change the shift points but the computer would not let him and we could not figure out why. Jody calls John Wood and explains what was happening. John Wood says the front ABS sensor are a Speed sensor and said to change it out. I went to Ford and purchased a new ABS sensor assembly and changed it. After that, my ABS light went off and Jody was able to make the changes without any problems.
While live tuning in March, I had an ABS light on that has been on for awhile, but I ignored it. But I knew what the problem was. One of my front tires rubbed a hole in the FRONT left sensor cable. While Jody was with me, he was trying to change the shift points but the computer would not let him and we could not figure out why. Jody calls John Wood and explains what was happening. John Wood says the front ABS sensor are a Speed sensor and said to change it out. I went to Ford and purchased a new ABS sensor assembly and changed it. After that, my ABS light went off and Jody was able to make the changes without any problems.
Elder User
Joined: May 2008
Posts: 860
Likes: 2
From: Liberty Lake, WA
No my speedo worked fine, but the speedo is controlled by the sensor in the rear diff.