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Old 12-01-2014, 07:27 PM   #1
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Please help with my brakes!!!

So my mom has a '02 GT that she drives like a grandma and hasn't really had a stich of problems with it but just recently a brake issue has come up. Here's what I have. She called me a couple weeks ago saying she had a noise in her front end. I checked it out and sure enough one pad was starting to get to metal on metal. I noticed that the inner pad was wore slightly cooked so I told her I'd clean up the calipers good and keep an eye on it. Well she's been driving it for 2 weeks and today she called and said she had a horrible sound now. I drove the car and couldn't duplicate the sound but for safe measure I jacked up the front and sure enough the left front (which was were the pads were wore crooked) was very hard to turn so I went and got a reman. caliper and slapped it on and I after bleeding it good I have the same problem. The left front will hardly spin by hand but the right front is fine. I know there is a chance the caliper may be bad but I personally don't feel that's the problem but I'm just a shade tree mechanic so I know I may be wrong. When I got the caliper on and bolted up while I cleaned up I figured I'd let the caliper gravity bleed for a few minutes before manual bleeding it. I loosened the bleeder and within 5 seconds fluid was coming out. Not fast but coming out nevertheless so am correct in thinking maybe for some reason a p.valve or the antilock box could be putting pressure on just that wheel? Any way to check that? Thanks for the help fellas.
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Old 12-01-2014, 09:47 PM   #2
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Does the wheel loosen up and get easier to turn if you loosen the bleeder screw? It might be possible that one of your lines is partially clogged
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Old 12-02-2014, 04:10 PM   #3
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Make sure you didnt put a twist in the line when you installed the caliper.
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Old 12-02-2014, 06:26 PM   #4
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Didn't have a chance to check anything today but I'm pretty sure I didn't twist the line as I have done that before and know that drill. I have a feeling that the problem is either the rubber line is collapsing or just maybe the new caliper is bad. Soon as I get time I'm going to crack the bleeder and see if that helps. If so that would tell me the caliper is working correct? I picked up a new rubber line today for the heck of it, at least that'll be new also.
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Old 12-04-2014, 08:36 AM   #5
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New pads, new caliper and new disc...right? If you put new pads on a scarred rotor the pads with prob hang up. The pads need a smooth machined surface. Make sure the caliper piston will retract smoothly in its bore. Flush the system. Thats about the best a shade tree mechanic can do. Have to take it to a tech if 'new parts' don't bring it back...?
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Old 12-05-2014, 12:22 AM   #6
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New lines in the front. I'm going through this now. Just waiting to have a few days to get my new lines in.
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Old 12-05-2014, 06:06 PM   #7
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Did you replace or resurface your rotor? Don't really sound like a plugged line to me. Could not hurt to replace them anyway because of their age.
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Old 12-06-2014, 09:50 PM   #8
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Here's an update. I did get the rotors resurfaced. I cracked the bleeder and nothing happened. Some fluid trickled out but I still couldn't turn the rotor. So I pulled the line off and still to get the caliper off I had to pry it off with a lot of force. So this made me assume my reman caliper was indeed bad. So I went back and swapped it out and I had already bought a new line so I put it on too. Well after I bled it and all there was still quite a bit of resistance. I could turn it by hand but when I put the car in drive (auto) the car won't roll at idle. It used to roll freely idling. I drove it around for a few miles and when I got back the brakes weren't smoking like they were but it was definitely hotter than the pass side. I jacked it up and still had to use quite a bit if force to turn the wheel. I personally would take it to a pro but it's my moms car and she doesn't have the $$ to do that. So any more help would be appreciated.
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Old 12-06-2014, 10:09 PM   #9
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If the car has ABS that might b an issue? Had the same exact issue on my Yukon and had to replace the ABS block.


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Old 12-07-2014, 02:55 PM   #10
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I was thinking that too, if the rest of the brakes are fine its not the Master cylinder. Only thing left is the ABS controller if all the lines going to the brake are good.
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Old 12-07-2014, 07:01 PM   #11
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So, you have the brake line off of the caliper and still the pads are dragging fiercely on the rotor, with no fluid pressure? Sounds like the caliper is still hanging up. ? If the pads will not retract enough, the caliper is hanging up on the pins or the piston is sticking. I am thinking
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Old 12-07-2014, 07:12 PM   #12
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Abs was my initial thought but with the line off there is still pressure. I know that points me straight to the caliper, again. She's gonna drive it for a while and we'll see what happens.
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Old 12-08-2014, 12:01 AM   #13
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Quote:
Originally Posted by DeclansDaddy View Post
Abs was my initial thought but with the line off there is still pressure. I know that points me straight to the caliper, again. She's gonna drive it for a while and we'll see what happens.

So this happened with the stock caliper and the reman... Did u get another caliper after that? If ur on ur 3rd caliper I'd be checking to make sure there isn't something bent ie guide pins etc.


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Old 12-08-2014, 02:13 AM   #14
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I havent worked one of these cars but do they have the floating or fixed calipers? If its floating then id check the pins. Maybe they got bent when the first caliper stuck? Or chech the hub for play or see if the bracket is bent something has to be tweaked for the pads to wear unevenly


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Old 12-08-2014, 05:53 PM   #15
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Order a new set of guide pins and lube them good


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Old 12-08-2014, 06:41 PM   #16
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I'm on my 3rd caliper. The stock then 2 remans. They come with the new bracket and all so pins and all hardware is new. She drove it today and didn't have any noise or smell. Didn't see smoke or anything so maybe they are fine now.
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Old 12-08-2014, 06:43 PM   #17
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check to see guide pins allow caliper to slide in and out from rotor,make sure pads are in correct and not wedged,,pump brake pedal to lock pads against rotors,undo the flex line bolt from caliper and see if pressure releases,if not,undo at brake line to flex line,and see if pressure releases,Ive seen a lot of calipers do this when flex lines go bad, they rot from inside and can go undetected`.Hope this helps.
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