Help with an ABS issue! - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 02-10-2010
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Help with an ABS issue!

I have a 1999 Ranger Super Cab 4x4 XLT with a 3.0 flex fuel that is having some ABS issues. When the brakes are applied and I am slowing down and get to about 2-4 MPH the ABS kicks on. I scanned the truck with a Ford scan tool and while driving it told me that the front right wheel speed sensor was off by a couple MPH. I replaced the wheel speed sensor and indeed the old one had a broken coil. After replacing the wheel speed sensor the truck still has the same symptoms. Anyone else have this issue? ABS kicking on around 2-4 miles per hour when braking?
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Old 02-10-2010
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Try cleaning the ABS sensors?
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Old 02-10-2010
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Originally Posted by rangerboy101 View Post
Try cleaning the ABS sensors?
lol. it works with a magnet.
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Old 02-10-2010
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clear your code. I replaced one of my sensors because it had a cut wire. the codes will stay stored in the computer until you manually reset them.
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  #5  
Old 02-10-2010
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It is not throwing a code which is why I think this is really weird.
I might just disconnect the battery to reset the computer
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Old 02-10-2010
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Originally Posted by motoxracing782 View Post
It is not throwing a code which is why I think this is really weird.
I might just disconnect the battery to reset the computer
That wont fix it. Its your rear tire locking up. mine does it all the time. its pretty embarrassing when im going like 2mph and i hit the brake and they lock up and let off, abs light flashing lol. i got used to it. not a big deal man. the light should go away or u can spray it with wd40 (the sensor)
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Old 02-10-2010
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The rear does NOT lock up.
And there is no ABS light at all.
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Old 02-10-2010
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My truck did the same thing when i switched to aftermarket rotors. It turned out the tone ring (that the ABS sensor uses on the backside of the rotor) was slightly different than the stock one. Have you recently replaced the rotors? I would check the tone rings to see if they are wobbly cause that might throw it off.
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Old 02-10-2010
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if the abs kicks on the light should come on every time i have the problem it lights up. thats my truck anyway lol
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  #10  
Old 02-10-2010
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The rotors were replaced with factory OE replacements maybe 30k ago give or take. This started happening in the last 3-4k miles.
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Old 02-10-2010
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I believe if you remove fuse 14 (Red 10A) from the passenger fuse panel this should deactivate the ABS system (note the ABS light will come on). Drive it for a few miles and see if it still feels like the ABS system is kicking on. If so, it’s not due to the ABS system.
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  #12  
Old 02-10-2010
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I have disconnected the ABS for a couple weeks and it does not have the same symptoms when disconnected.
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  #13  
Old 02-11-2010
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same thing happen to me

Quote:
Originally Posted by motoxracing782 View Post
I have a 1999 Ranger Super Cab 4x4 XLT with a 3.0 flex fuel that is having some ABS issues. When the brakes are applied and I am slowing down and get to about 2-4 MPH the ABS kicks on. I scanned the truck with a Ford scan tool and while driving it told me that the front right wheel speed sensor was off by a couple MPH. I replaced the wheel speed sensor and indeed the old one had a broken coil. After replacing the wheel speed sensor the truck still has the same symptoms. Anyone else have this issue? ABS kicking on around 2-4 miles per hour when braking?
check your ABS sensor its under the driver side cab blow it out and clean it out and make sure she connected good and pull your battery cables off for about 10mins to reset computer!!! ranger power
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  #14  
Old 02-11-2010
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Check here for a little info .
https://www.ranger-forums.com/f18/ab...me-help-56824/

Also jack up the front wheel and check for a loose wheel bearing.

Click on the Search button at the top of this page and type abs 5mph in the keywords box.Then search. That narrowed down the amount of posts to wade through.
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  #15  
Old 02-11-2010
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Performed the search and found a couple threads with possible solutions that I have already tried.
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  #16  
Old 03-08-2010
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Quote:
Originally Posted by motoxracing782 View Post
Performed the search and found a couple threads with possible solutions that I have already tried.
Did you every find out what the problem was?
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  #17  
Old 03-08-2010
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I would at least clean the rear speed sensor, or replace it.
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Old 03-08-2010
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If there is any loose rust or debris on the sensor it will cause it. I would try cleaning the new sensors and being very carful to keep them clean reinstalling them
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  #19  
Old 03-08-2010
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I am thinking it is the ABS module. I have checked resistances, voltages, used a pico scope, ford scan tool, and an OBD2 scan tool. All are within spec and the sensors are sending signals which are pretty accurate. Mounting surfaces are clean, and the tone rings are clean. Not sure where else to go from here.
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  #20  
Old 03-10-2010
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I have the same thing, it started after the brake rotors where replaced, but it doesn't happen every time I stop, just some of the time. Mostly when I am stopping down hill, or stopping and turning at the same time.
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  #21  
Old 03-10-2010
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Mine happens under any conditions, up hill, and down hill. Its pretty annoying to say the least. I have a couple more tests up my sleeve and I will keep you guys posted.
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  #22  
Old 04-06-2010
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Of ots the ABS module that could be expensive.

my ABS has begun acting up as well... to the point where i rolled right passed my driveway yesterday =/

so atm, my abs is completely disabled till i can further investigate the issue.
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  #23  
Old 08-07-2010
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so what were your guys' fixes for this issue? My abs comes on mostly when I slow down and turn right, like into my driveway. I ended up replacing (because they broke getting them out) the rear and front drivers side speed sensor to no avail. My luck would say that the passenger front is bad. I don't really want to try and pull it out because it'll prolly break too, but could that one be the culprit?
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  #24  
Old 08-07-2010
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It could be that or a loose front wheel bearing. It doesn't have to be too far gone to change the sensor clearance.
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  #25  
Old 08-07-2010
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try cleaning the exciter rings on the rotors, and also check for missing teeth.
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