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new brakes, more problems


dohc v6

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ok i have a 94 lumina z34 and for the longest time i have been running on j/y rotors. becuase i did the 96 swap. well i noticed that the j/y rotors every time i would be going it would be making a small noise that bad set of bad(the ware sensor). also the pedal would viabrate at speed over 40mph. well i bought some new rotors and installed them. not only did it not fix the problem but now it sound like the pads are always touching. please help.

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why would that make my steering wheel and pedal vibrate. also i noticed when the car cools down no more noise but when i start going it comes right back maybe 10-15 miles.

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sounds like the caliper sliders are sticking. Pull em off and work anti-seize into the fittings with some channel locks to move the sliders back and forth. If you bought the cheapie rotors that could be the problem with the vibrating. I'll never buy the cheapies ever again.

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I've learned to always buy equal quality parts. For example, don't buy cheap rotors and then get high quality ceramic pads. They will rip the cheap rotors apart :lol:

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I have these pads with these rotors.

1.pads-friction master ceramic pads

2. rotors-http://cgi.ebay.com/ebaymotors/CHEVY-MONTE-CARLO-1995-1999-CROSS-DRILLED-ROTORS-FRONT_W0QQitemZ8042155537QQcategoryZ33564QQrdZ1QQcmdZViewItem

 

 

the guy with the rotors is sending me out a brand new set. awsome customer service.

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Well if the slides dont have any kind of grease on them, when you hit the brake they get stuck there and dont go back to there normal position. Therefore giving you problems.

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ok i replaced the pads as well now and i measured the rotors. still nothing. but i did noticed when i was pushing the pistions back in i pressed on the pedal and on piston did not come back out.

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:shock:

 

I wouldnt have pressed that pedal with the caliper off, it should blow out the piston. But seeing as how thats locked up, as it seems, you now know your problem. You piston gone. Dont bother with a rebuild kit, since there almost as much as a new caliper (minus the core charge)

 

Also when you push the piston back in, did you have the bleeder screw open a little bit? I hope so cuz if you have ABS, itll fuck that up, pushing the fluid back up into it.

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no i pressed it in with it closed. anyways. I went up to discount and bought brande new calipers and still nothing. do maybe think the pads are to aggressive. they are ceramic. maybe they are messing the rotors up real bad. what should i do

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If your going to use ceramic pads, you cannot use cheap ass metal rotors. Youll have to buy a good quality rotor. (atleast I found this case to be true for me I duno about some of you guys)

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