wandawoods Posted September 10, 2003 Share Posted September 10, 2003 94 LS400 have my brake serviced at Midas about 10 days ago. the works were: all 4 pad changed, two new rear rotors, two front rotors machined, changed out a jammed bolt at one front caliper. since these were done, they make pretty annoying high-pitch noise at the end of braking right before the car completely stops. Midas says it's normal in 'break-in' period of new brakes. is there any truth to that? Quote Link to comment Share on other sites More sharing options...
VMF Posted September 10, 2003 Share Posted September 10, 2003 i dont think so. i have the same problem and i changed my brakes 3 months ago....... i still have this annoying sound every time i brake. i dont know what to do myself. Quote Link to comment Share on other sites More sharing options...
wandawoods Posted September 10, 2003 Author Share Posted September 10, 2003 i dont think so. i have the same problem and i changed my brakes 3 months ago....... i still have this annoying sound every time i brake. i dont know what to do myself. hmmm..... did you do the work yourself? if not, what did your mechanic say? Quote Link to comment Share on other sites More sharing options...
VMF Posted September 11, 2003 Share Posted September 11, 2003 i have the OEM brakes and pads. i got this after 2 weeks of the change. i came to complain and mechanic just suurfaced the rotor again. but it didnt resolve the problem and he gave up. even the brake quiet spray didnt help. what i think is they missed a little spring or whatever it called it looks smth liek this /\ and it supposed to go after the pad. i forgot what its called. and i think its vital to elimintate this noise. Quote Link to comment Share on other sites More sharing options...
mapman Posted September 11, 2003 Share Posted September 11, 2003 Just did my brakes a couple weeks ago. Used thick liquid both sides of each shim and about a week later i also started to get squeal at end of stop. Quote Link to comment Share on other sites More sharing options...
SKperformance Posted September 11, 2003 Share Posted September 11, 2003 you normally do not need or shouldn't add the brake squeal to the shims as that is what they are for depending on the noise it may be the new brakes are not being seated properly first for long enough when new causeing th brake pads to glaze making a noise when lightly applied but it disappears when pressed hard Quote Link to comment Share on other sites More sharing options...
VMF Posted September 11, 2003 Share Posted September 11, 2003 so how do i get rid of this noise if i have it for couple of month already? Quote Link to comment Share on other sites More sharing options...
wandawoods Posted September 11, 2003 Author Share Posted September 11, 2003 I went to Midas again this morning. they assured me the noise is 'normal' and it takes 500~800 miles for the new brakes to 'settling in'. we shall see about that.... Quote Link to comment Share on other sites More sharing options...
VMF Posted September 11, 2003 Share Posted September 11, 2003 i got 1200 miles. the noise is still there...... let me know how its gonna work for u. i also noticed that if its really humid outside (e.g. after the rain) when the car was standing outside for a period of time. brakes make some kind of strange noise when i apply them for the first tme. i dont know if its normal. if its gonna continue like this i will just switch to professional brembo equipment. Quote Link to comment Share on other sites More sharing options...
SKperformance Posted September 11, 2003 Share Posted September 11, 2003 vmf that strange noise is the rust on the rotors from moisture nothing out of the norm it is just scrapping the junk off the rotor after being wet now to the constant new noise the noise will be there if there is no squel shims are reinstalled basically they are a thin metal plate that goes in bettween the calpier and the brake pad it keeps the brake pad straight if they took them off and never reinstalled tehm then that is the reason for the squealling it would take a few hard stops to start glazing a pad a nd rotor to get a squeal just look at the wheel and se if you can se the caliper when looking at it there should be a little peice of metal preventing you from directly seeing the brake pad which are usually coloured or some sort if you see the metal shim then it is ok as there are usually 2 small gaps on the outside to look at the pad from outside of the wheel Quote Link to comment Share on other sites More sharing options...
VBdenny Posted September 11, 2003 Share Posted September 11, 2003 OEM Lexus brake pads use two shims on each side of a brake pad. Some aftermarket pads use only one. I also think what VMF said about leaving off parts might have something to do with it. The part he described is a wear indicator. They shouldn't squeel, mine never do. Quote Link to comment Share on other sites More sharing options...
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