Brake pads were replaced and now my truck shimmy's when braking.
I've since had the rotors turned again and new pads installed again which solves the problem for a few weeks but then the problem returns. I have even replaced the rotors although we reused the existing pads. I would appreciate any ideas.
sounds like your calipers are sticking and your rotors are getting warped
a Complete brake job usually means new rotors, calipers and pads...eliminates any problems and with a 2001, I have an '02 w/122k and replacing everything makes the truck act/stop like new!
how long of a time span were the old pads on the old rotors (even cut) before they were put on the new rotors? Do oyu feel the shaking more in the seat (your ass) or steering wheel and dash board? if you feel it in the wheel/dash more, it is coming from the front, if you feel it on the floor, or seat more it is from the rear....calipers aren't changed often., only when there is a problem, still too many options to go buying more parts...
the old pads were on a couple of months before changing the rotors. The pads and rotors have never been replaced at the same time but the dealer turned the rotors and put on new pads which only helped for a few weeks. They then suggested replacing the entire front end. This all began from an out-of-town break job and I suspected that they didn't turn the rotors. Should I try new rotors and pads or maybe calipers?
no calipers, u r throwing money away, personally i dont cut rotors anymore, why, do the job yourself, safe money, it is easy to do...the pads can wear to the shape of the old rotor, and not have the surface needed for a new rotor, hence shimmy, please tell where the vibration is mostly felt...
the shimmy is definitely in the front. It's worse when I'm stopping at high speeds. Thanks for your help.
it only vibrate when braking, no other speeds, such as a bent rim? you may rotate the tires to eliminate them from the check list... make sure all the suspension parts seem tight, any arm or loose parts will do that..calipers may be loose, any rattling noise, all seem tight? but with new rotors, have the company warranty the pads if they will for a brand new set (if it is possible and not a shop). any lights on, like abs, traction control while braking, to eliminate those systems?
you can look into the calipers, and tell if they are working properly by lines/indications or wear patterns on the new pads, and old ones, also, can u tell which side does it more?
If the a caliper isn't releasing properly, the rotor can heat up by the friction and then get uneven spots that can cause the vibration. Or if the pad slide area is corroded on the caliper, the pad might get stuck against the rotor and cause the same thing.
I experienced the same problem and found that it was not an uncommon problem, possibly due to poor brake engineering... The advice I received was to replace the rotors with slotted and/or drilled rotors re: sport rotors...EBC Brakes, around $56 each plus pads $43 to $52....Good luck
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