ABS inop??
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TECH Resident
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From: St Petersburg Florida
ABS inop?? well i hoped into my car today to go run some errands. I got about a block away from the house and noticed that my abs inop light was on. When i got to where i was going i shut the car off and let it sit for a few mins. I re-fired it and the light was gone. On my way home the light came on again 
and hasnt been off since. I tried disconecting the battery and it didnt help. What do i need to do or check?
and hasnt been off since. I tried disconecting the battery and it didnt help. What do i need to do or check? I believe it may come on if the bulb is bad on your third brake light. It's somehow wired into it. I used to have it come on whenever it rained for some reason, then it'd turn back off a couple days after. Then, after we had some big rain last year, and I let my car sit for a few days while on was on vacation in Arizona, it never came back on after. So, I don't really know what the deal was with it.
Thread Starter
TECH Resident
iTrader: (3)
Joined: Sep 2007
Posts: 829
Likes: 1
From: St Petersburg Florida
My did the same not too long ago when it rained, but then it went back off. Now its on all the time. I might take it to my buddies shop today and let him check it out.
bad wheel speed sensor, different size tires front to back, third brake light out, etc
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Not to hijack thread, but my abs inop light has been on for years. I had it looked at by a shop and they said the code was a rear ground fault. They recommended changing the rear abs electrical harness, so I did and still same deal. I was wondering If I should change the rear abs sensor, thanks! Oh btw I did blow up my diff from launching about the time this started, so that makes me wonder if the rear sensor got damaged.
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I have a similar issue here except if I don't take out the little 5 amp fuses under the hood for the ABS, it will occasionally flicker the "brake" and "low trac" lights as well and the ABS will come in and out a bit as I stop once in a rare while. My bet is on a wheel speed sensor as it is obviously getting signal to react/operate from something and the solenoids are working enough to pump the ABS sometimes when stopping. I will get a scan tool on it one of these days and see if i can diagnose a wheel speed sensor or at the very least check/test them.
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