Question about 1992 Cadillac DeVille

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ABS light, light come on goes off and comes back at 5-10mph

I have an ABS light that won't go away. My car will not pass inspection until it does. Basically, the ABS light comes on during ignition start up then goes off until the car reaches 5-10mph in either reverse or forward. Almost everthing has been replaced in the last 2 years brake-wise. New rear brakes everything including hoses, except for sensors. New rotors and pads on the front, including hoses. I also installed a new master cylinder due to leakage. I have jacked up each wheel separately and spun the wheels up to 25mph for the front and as fast as I could physically spin the rear. The ABS light came on only once for the front drivers side wheel, but I could not repeat it. The ABS light did not come on ever for any other wheel. Also if I disconnect the"sensor" from any wheel the ABS light comes on and will not go off until reconnected and ignition cut off. There are at least 5 speed sensors (4 wheel and 1 tranny). I suspect one is the problem, but replacing all would cost several hundred, just in parts. Anyone had a similar problem or any info would be great.

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  • blackwes Feb 10, 2009

    Thanks for the input may try that. The light has been on for about 5 yrs now and only this year has someone inspecting my car said it was a problem. I personally feel that if the brakes work fine why do I have to have an antilock brake system, many cars do not. He said if factory issued it must work, pretty crappy I think. Now I see why cadillac or GM is in such peril right now, they should just keep things simple, way to many electronics on cars. Thanks for your advice, I will definately try.



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Have had simmilar problemn with my 1992 licoln towncar do have a solution however will cost hundreds you have a ABS speed sensor out as u kno the problem is you cannot only replace one because they are wire through the axels you have to replace both meaning either both front or both rear in your case if front driversside is faulty you will need to replace both unhooking will only cause light to permantely stay on one suggestion that may help atleast to get an inspection would be to dissconnect sensors to that paticular wheel shut off engine and restart when light is off dissconnect batter for 5 mins then reconnect tghis will reset computer inside possibly giving you enough time to get an inspection befoere computer resets and abs comes back on however it is not guarented to work depends on severit y of damaged sensor and how quickly you module can reset note that this is a temo fix abd sensor will not prevent any stopping or cause danger to braking system it will infact stil engage possibly not on that wheel but that is the problem with an abs as apposed to just a standard anti lock braking system more sensor to break and cost hundreds

Posted on Feb 10, 2009


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