2006-06-25 22:07:37 · 18 answers · asked by goldnewt 1 in Cars & Transportation ➔ Maintenance & Repairs
1) They haven't bedded in yet..... they need at least 120miles of normal driving to do so.... try to avoid harsh braking until then.
2) Pad material: I've heard that Carbon-metallic pads can do this. Think I also recall something about the use of Asbestos in brake pads (in the UK + EU at least) has been outlawed, so they have to use alternative materials instead which aren't as soft.
3) The mechanic didn't clean the dirt off the calipers and / or failed to use enough copper grease on the back of the pads when installing them.
2006-06-26 00:41:28 · answer #1 · answered by Anonymous · 3⤊ 0⤋
. If the break pads were installed but the rotors were not replaced or resurfaced, then the rotors must have the "glaze broken" on them. This usually involves taking piece of sandpaper and rubbing it all over the rotor surface in a swirling motion. During this process, it will become immediately evident as to what you are removing by sanding the surface like this. A layer of old break material will remain on the rotors and cause friction problems like noise or uneven braking.So it is important to remove this residual matrial that has been glazed onto the rotors by the heat produced by friction durring breaking. Often times, squealing can be as simple as having neglected to use some anti-queal compound between the pistons and the break pads. I like to use Teflon anti-squeal shims along with the anti squeal compound. The compoun is sold in small singe use packets for less than two dollars at most chain auto part stores. Also, when pads are installed, regardless of the rotor condition or preparation, they must be completely free from grease and oil. In fact the surface cant be contaminated by these things what so ever for proper brake function. That is why there is a special spray called brake parts cleaner that is made specifically for cleaning brake parts, as it dissolves oil and grease off the parts with out contamination them with petroleum. If you replaced the pads yourself, you can often remove them and clean the pad surface with brake parts spray, or denatured alcohol. If you choose to do this, you can take the opportunity to pit some anti-squeel compound behind the pad.
It could be much easier to advise you if you would have stated in your question who installed the pads and what measures have been taken to reduce the squeal thus far. Also it would be helpful to know the procedure used and the condition and preparation of the rotors too. Good Luck.
2006-06-25 22:36:44 · answer #2 · answered by youknowkennio 3 · 0⤊ 0⤋
If you put them on, you should have at least cleaned both the new brakes and the the rotors (also having the rotors freshly cut), but if you took it to a shop, they should have done all of that.
Sometimes new brakes squeek due to the pads not being worn into the groves of the rotors. You might want to try riding the brakes a little hard for a couple minutes to set the pads. That usually works. Otherwise, take it back to the shop that did the work, and see what they can do.
2006-06-25 22:19:15 · answer #3 · answered by TORCH 3 · 0⤊ 0⤋
New brakes squeal because of two reasons. One is that the new pads havent conformed to the surface of the rotor yet, and as they do the squealing will slowly stop. The second is the possibility that a little grease, or oil from sweat has gotten on the pads. This will also slowly stop as the surface of the pads wear down a little, taking the contaminant with it as it does.
2006-06-25 22:34:49 · answer #4 · answered by Darqblade 3 · 0⤊ 0⤋
You might have vibration of the pads in the caliper, in which case you can apply an adhesive or anti-squeel compound to the back of the pads, not the pad itself. You may also have a set of pads that have a fauulty backing plate that isn't cut to spec. If thats the problem, get new ones.
2006-06-25 22:24:01 · answer #5 · answered by silverjacket9 3 · 0⤊ 0⤋
Because they want to tell and alert every one in the vicinity that they are quite young and powerful to handle the vehicle very nicely (A joke! See the real answer below).
Their edges are quite rough, being new one, which are sofened and smoothened by rubbing against the wheel drums after you apply for some time. The squeeling will become lesser and lesser after every application.
2006-06-25 22:20:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Your rotors are probably dirty. spray and scrub (if possible) them with Bleach and see if that doesn't help. If that doesn't help, they probably didn't install the brakes right(i.e. missing a shim or the slide rails are misaligned). Another thing I just experienced with a friend's brakes. It might actually be the brake shoes that are squealing (the back brakes if you don't have 4 wheel disc brakes). They might need to be adjusted.
2006-06-25 22:27:41 · answer #7 · answered by Rockstar 6 · 0⤊ 0⤋
1
2017-02-10 03:12:50 · answer #8 · answered by Anonymous · 0⤊ 0⤋
it all depends on if you got your rotors replaced with them, if you did they are just new and need to be broken in or they were not crosshatched proplerly. If you didnt get newrotors with your brakes they probably need to be either cleaned or remachined. or sometimes you just get squeaky brakes right out of the box and you just neeed to spray some brake squeak stopper on the rotor and it will be fine.
2006-06-25 22:30:43 · answer #9 · answered by chaotic 1 · 0⤊ 0⤋
you probably need to bed them in this means going allong a safe bit of road ie some where with not a lot of cars and pressing the breake pedal at the same time as the throttle and slowing the car down without stalling it .
make sure you leave enough space to stop .
2006-06-25 22:58:24 · answer #10 · answered by LEE 2 · 0⤊ 0⤋