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#1
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?ABS
My 1994 LSI makes a grinding noise with a pulsating brake pedal at about 2 mph when coming to a complete stop. No dash lights are on. Brakes, tranny, seem fine otherwise. Any suggested diagnoses/fixes much appreciated.Thanks.
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#2
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Re: ?ABS
Cracked or broken/chipped tone wheel. It's sensing a longer period without a tooth so it thinks the wheel is locked. Could be a dirty sensor as well, but I'd inspect the tone rings first.
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#3
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Re: ?ABS
Thanks, and I learned what a tone wheel is.
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#4
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Re: ?ABS
Can you feel a warped rotor at under 30MPH? Or only over 30? How would he know what wheel is causing his problem ? Is there an easy way to tell what rotor is warped?
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When I was in school I sucked in sports. Then I found out I can buy trophies and now I am great at everything. Last edited by Conn SVX; 06-25-2014 at 06:01 PM. |
#5
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Re: ?ABS
Quote:
There is no way to tell which wheel other than by "feel" other than visual inspection. With a SSM, you may be able to monitor individual ABS wheel speed sensors and be able to pick up the one causing the issue but I don't even know how powerful the SSM is other than Engine and trans monitoring. |
#6
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Re: ?ABS
if you have a voltmeter you can monitor the ac voltage produced by the sensor while spinning the wheel by hand. could also be a more worn tire or even a tire that is low on air. had a subaru a few weeks ago doing the same thing and just had a low tire.
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Current Stable: 1992 SVX 1979 K5 Blazer Cheyenne 1956 Plymouth Belvedere - Daisy 1967 Chevy C20 1953 Chevy 210 1969 Plymouth Satellite 1949 Chevy Thriftmaster 1959 Chevy Apache 1951 Chevy Stepside 1969 Chevy Camper Special 1978 Ford F150 w/ stroked 460 1986 Volvo 740 turbo wagon 1999 GMC 2500 Creep Van 1994 Impreza Outback |
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