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Possible ABS Issue? 700 1992

posted by  Chris Mullet on  Sun Jan 24 03:34 CST 2010
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last visit: Fri Oct 24 09:08 CST 2014
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I've got a 92 745 NA with unknown mileage (I think around 150,000) and ABS brakes. Sometimes when backing down the driveway with my foot applying medium pressure to the brakes, I'll get a single muffled "clunk" sound that I can feel both in the pedal and the seat of my pants, followed by what sounds like a VERY FAINT buzzing for a split second. I can sort of imagine it coming from the right front area of the car. At first I imagined a loose caliper or the like, but everything seems snug there. Also that doesn't explain the faint buzzing. Everything acts OK when going forward.

I've cleaned both front ABS sensors - lots of fuzzy iron particles built up on the magnets - no fix.

Is there some sort of ABS reset or calibration or ?? that is supposed to occur when backing up?

Anyone have more ABS experience that can offer an opinion?

Thanks once again.






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New Possible ABS Issue? [700][1992]
posted by  Chris Mullet subscriber  on Sun Jan 24 03:34 CST 2010 >


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