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Help! Brake pads not making full contact with rotor!
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<blockquote data-quote="SublimeRT" data-source="post: 13282170" data-attributes="member: 9879"><p>It does sound frustrating. I hate throwing parts at a car in an attempt to fix something; it's a good way to waste a lot of money, and it's sometimes difficult to diagnose a car without seeing it. So I'm not going to tell you it is in fact a caliper.</p><p></p><p>If you are 100% sure everything is torqued to spec (even the wheels, over torquing them can warp rotors) and everything is in alignment and not bent and nothing else is obviously wrong and you do not have incorrect parts, I would probably try to have a look at the caliper while someone is pressing the brake pedal. You could do this without removing the wheel and see if anything is moving under pressure. Maybe something is cracked and you can't see it when it's not stressed? Maybe remove the wheels, rotors, and pads and do the same test while someone eases on the pedal to see what the pistons are doing and if you can push them back in without too much drama. Definitely not the same stresses as on the car and in motion but it might give a clue. You could remove the wheel, reinstall a few lug nuts and lightly snug them down, just enough so the rotor doesn't move off the hub, and measure run out of the rotor with a dial indicator, and play in the hub too while you're at it. Did you do any bleeding of the brakes? How does the fluid look? Maybe there is some air in the system somewhere? Trash in the system or in a distribution block? Valve in the ABS block stuck? </p><p></p><p>Some of these suggestions are probably a bit off base or extreme, but when chasing down a problem you have to consider everything and can't even rule out a part just because it's new. Obviously though, start with the simple stuff. I'd be looking at the caliper. If you are comfortable with it, rebuild kits for calipers are usually pretty cheap. If there is nothing wrong with the caliper body, piston bores, or pistons (the pistons could be replaced if something was wrong with one though) rebuilding them is just as good of an option as replacing them. Good chance to paint them up nicely as well. If they're original calipers and they haven't been rebuilt that very well could be the problem, these cars are creeping up on twenty years old after all. Maybe someone else will chime in, I know there are some pretty sharp guys on here.</p></blockquote><p></p>
[QUOTE="SublimeRT, post: 13282170, member: 9879"] It does sound frustrating. I hate throwing parts at a car in an attempt to fix something; it's a good way to waste a lot of money, and it's sometimes difficult to diagnose a car without seeing it. So I'm not going to tell you it is in fact a caliper. If you are 100% sure everything is torqued to spec (even the wheels, over torquing them can warp rotors) and everything is in alignment and not bent and nothing else is obviously wrong and you do not have incorrect parts, I would probably try to have a look at the caliper while someone is pressing the brake pedal. You could do this without removing the wheel and see if anything is moving under pressure. Maybe something is cracked and you can't see it when it's not stressed? Maybe remove the wheels, rotors, and pads and do the same test while someone eases on the pedal to see what the pistons are doing and if you can push them back in without too much drama. Definitely not the same stresses as on the car and in motion but it might give a clue. You could remove the wheel, reinstall a few lug nuts and lightly snug them down, just enough so the rotor doesn't move off the hub, and measure run out of the rotor with a dial indicator, and play in the hub too while you're at it. Did you do any bleeding of the brakes? How does the fluid look? Maybe there is some air in the system somewhere? Trash in the system or in a distribution block? Valve in the ABS block stuck? Some of these suggestions are probably a bit off base or extreme, but when chasing down a problem you have to consider everything and can't even rule out a part just because it's new. Obviously though, start with the simple stuff. I'd be looking at the caliper. If you are comfortable with it, rebuild kits for calipers are usually pretty cheap. If there is nothing wrong with the caliper body, piston bores, or pistons (the pistons could be replaced if something was wrong with one though) rebuilding them is just as good of an option as replacing them. Good chance to paint them up nicely as well. If they're original calipers and they haven't been rebuilt that very well could be the problem, these cars are creeping up on twenty years old after all. Maybe someone else will chime in, I know there are some pretty sharp guys on here. [/QUOTE]
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Help! Brake pads not making full contact with rotor!
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