When i push my breaks on a slick surface my front breaks make a horrible chattering/grinding noise and do not work at all. it seems to sound like the abs is trying to work but it does not work at all. my light does not come on and my breaks are new. anyone know? or know where to find a diagram of this system so i know what to start changing out
A slick surface has nothing to do with it, it would actually be less of a noise on a slick surface,and if its a wet road, the water acts as lubricant on the pads, it sound like the job was done wrong, a pad clip broke, they did not clean the rotor( bad groves or chips in rotor, may had needed a resurface)
or they did resurface the rotor too good and the pads glazed over and are like to hard surfaces touching.
You need someone to pull the front two tires and inspect the calipers and rotors, someone that knows what they are doing. If the pads are still new and the rotor is slick,(very smooth ) they need to be ruffed up with a coarse sand paper, or the sand disk that mechanics use on rotors.
The abs system pluses fluid to the brakes, when you brake hard you
can hear it working, but there should not be any grinding noise.
Drive 30-40mph and stop as fast as you can,on dry road.
If its ok, no grinding, no uneven pull, stops quickly, then it could
be the abs system getting wet causing sporadic on and off.
Unless a dealer did your brake, you should remove all tires and inspect the drums and rotors,unless you don't know what your looking for, if the pads,shoes,rotors,drums, calipers, wheel cylinders, and spring hardware are all ok and the job was done right, then it is the abs system. I have seen ASE mechanics
that I would not fix a bird house,let alone a car, so just because someone did a brake job does not mean it was done right.
You should go to an auto parts store and get a chiltons book,
and either buy it or look at the system diagram like you asked.
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on dry pavement it does not make that noise at all. only when the tires lock up it wil chatter a bunch. the first time it did it i had some stopping to it but now it just chatters and does nothing
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