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Re: still rehashing this ABS dilemma Posted by Ari [Email] ![]() ![]() In Reply to: still rehashing this ABS dilemma, claude, Sun, 2 Jun 2002 23:51:50 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I don't believe that there is a major difference between ABS and Non-ABS calipers. The amount of force a caliper applies to the brake pad is a function of the hydraulic pressure and the cross-sectional area of the caliper piston. I don't believe that the cross-sectional area of the piston changed appreciably, if at all, going from ABS to non-ABS. So I don't see the brake system 'overpowering' the calipers.
All the ABS system can do is release pressure on an individual caliper, not apply it. A difference between the ABS and non-ABS cars is the method of brake boost - vacuum for non-ABS, hydraulic from the ABS pump for ABS-equipped. But I don't believe that the system pressure is appreciably higher.
Your first step is good - flush the system, all four legs. Air in the system will cause lousy pedal feel. Anders makes a good point about the brake pucks - if someone didn't understand how to use anti-squeal compound, they could have messed up the pads pretty good. Replacing them isn't a bad choice. If you are still getting poor pedal feel, and excessive pedal motion, I'm going to assume that you've got a bad brake master cylinder. Screw up a seal or two, plug and orifice, and you're going to get lots of pedal motion and poor braking characteristics.
posted by 140.157.4...
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