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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Rabs abs speed sensor

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Old May 18, 2009 | 09:38 PM
  #1  
gthbryce's Avatar
gthbryce
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Tuned
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From: Carmichael, CA
Rabs abs speed sensor

Rabs abs speed sensor... I replaced the abs sensor in my axle today thinking it would fix my amber rear antilock brake light from staying lit. After starting it up turning it off after a couple minutes and turning it back on as soon as it cranked over the light goes off for about a second then comes back on and stays lit. What else could be triggering it to stay on?
 
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Old May 19, 2009 | 03:37 AM
  #2  
ArdWrknTrk's Avatar
ArdWrknTrk
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Joined: Jan 2008
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From: EXTREME southwest CT
Club FTE Silver Member

I have collected some posts trying to solve this problem.
Can't get them now, but given a chance when I get back I'll search my subscribed threads for you.

You might need to bleed the RABS valve inside the frame rail beneath the driver.

There is a wire you can ground up above the footwell for a diagnostic self-test. (IIRC it's black and orange)
But I got no flashes, soooo finally gave up and have been staring at that stupid light for years.
 
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Old May 19, 2009 | 04:45 AM
  #3  
EPNCSU2006's Avatar
EPNCSU2006
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Joined: Nov 2002
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From: Concord, NC
Check the wiring at the master cylinder. I had a nagging RABS light that went away when I replaced the master cylinder. Apparently there was just a bad connection at the float switch and taking the wiring on and off made enough contact to complete the circuit. I could never get the RABS light to flash any codes when grounding the black/orange wire either.
 
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Old May 19, 2009 | 12:24 PM
  #4  
gthbryce's Avatar
gthbryce
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From: Carmichael, CA
ok I'll try both of your guys suggestions, thanks
 
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