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94 buick park ave.,brake pedal to floor.


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snowman442
New User

Oct 9, 2009, 6:57 PM

Post #1 of 2 (2033 views)
post icon 94 buick park ave.,brake pedal to floor. Sign In

replaced master cyl..,felt just like it was bypassing...no change.replaced frt pads and rear whl cyls.,bled system complete,no change ..pedal to floor,can pump up to stop...only thing left too look at is abs unit,,is there a valve that could dump pressure if it was stuck in valve body??Mad

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Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 10, 2009, 4:44 AM

Post #2 of 2 (2028 views)
Re: 94 buick park ave.,brake pedal to floor. Sign In

I've had that problem on a few different GM vehicles with ABS. I believe it is caused by dirt getting caught in some valving in the ABS unit. They way I cured more than one of these was too drive to a dirt section of road and do a couple of hard brake lockups, sufficient to activate the ABS on various wheels and it cured the problem every time.



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