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Brakes work TOO good

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Old Sep 18, 2012 | 07:23 PM
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Default Brakes work TOO good

So I have one of the strangest issues I've ever heard of. The brakes work too good, as in they just about lock up the wheels with a little bit of pressure.

Background:
Just did a brake pad change 2 days ago
Brake pads used - NAPA Safety-Stop Cermaic (NAPA Pads
Brakes worked normal for the 50 miles after change (slightly better)
Old rotors still on
Brake fluid level at exactly FULL
Lugs are tight to spec
Wheel moves freely when in park (I rocked it. Decided to not jack it up in the rain at night)
ABS is not working

After noticing this weirdness when I started driving down the block I decided to pull over and check (see above) the situation. I then drove to the local convince store trying to feel out the situation. Road manners are fine. Let go of the wheel and noticed no pull either way. No hesitation in acceleration and coasting in neutral led to no slow downs. Only other time I had experienced something slightly like it was when I had a seized caliper on a cracked knuckle with a destroyed bearing (long story), but at that time it pulled when braking on that van.
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Old Sep 18, 2012 | 08:04 PM
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Did you have your rotors turned?
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Old Sep 18, 2012 | 08:18 PM
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Originally Posted by mdnov
Did you have your rotors turned?
I did take em off but since my buddy needed them way worse than me I let him have mine. Old rotors went back on as they came off.
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Old Sep 18, 2012 | 08:21 PM
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1. Do all four lock up or only the rear or front or one only
2. Did u top the fluid off or was it at the full line after the brakes were finished. If you added was it new fluid something u had laying around and w it dot 3
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Old Sep 18, 2012 | 08:22 PM
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Originally Posted by slayer9019
I did take em off but since my buddy needed them way worse than me I let him have mine. Old rotors went back on as they came off.
????????
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Old Sep 18, 2012 | 08:28 PM
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Oh yeah, any noises?
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Old Sep 18, 2012 | 08:29 PM
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Did you take his old rotors then? I guess I am not understanding you.
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Old Sep 18, 2012 | 08:30 PM
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Originally Posted by jmac108
1. Do all four lock up or only the rear or front or one only
2. Did u top the fluid off or was it at the full line after the brakes were finished. If you added was it new fluid something u had laying around and w it dot 3
1. It seems like the front were doing almost all of the braking. It locked hard enough to dip my front end a good amount.
2. Fluid was a hair below full before change. Never had to add any more. The pads I took off were not really that worn but I replaced them anyway.

Originally Posted by RTorrez1
????????
Woops forgot to clarify. Had new rotors but I gave them to my buddy (his rotors were SHOT. My rotors looked pretty good and checked em with a digital caliper all within spec.


Also to add another bit of info.

I took out my maglight and checked the seating of the pads. Bottoms and tops were sitting as they should. The PO had them installed upside down (u at top, single bar at bottom). I installed them U side down, single bar at the top.

Last edited by slayer9019; Sep 18, 2012 at 08:33 PM.
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Old Sep 18, 2012 | 08:35 PM
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One of calipers is seized. Touch front rims after driving
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Old Sep 18, 2012 | 08:37 PM
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What is this on? Have you made any modifications to the brake system other than the pads?
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Old Sep 18, 2012 | 08:37 PM
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Originally Posted by car5car
One of calipers is seized. Touch front rims after driving
Any possibility this can happen if you push the piston too far into the caliper? I can't check it since I have to park a half mile away from my apartment
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Old Sep 18, 2012 | 08:38 PM
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Originally Posted by lowrange2
What is this on? Have you made any modifications to the brake system other than the pads?
Stock 2000 XJ sitting completely stock on Ecco 15" rims
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Old Sep 18, 2012 | 08:38 PM
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Originally Posted by car5car
One of calipers is seized. Touch front rims after driving
Do you think you could be a bit more specific? I know what you're getting at but does the OP?

Complete sentences are awesome.
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Old Sep 18, 2012 | 08:38 PM
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First thing I would check is that u didn't kink the flex lines. Sometimes happens if u twist it over itself when you moving them out of the way while doing the brakes and forget to straighten them back out. If this is the case lines will be looped over themselves

Always best to start with the basics
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Old Sep 18, 2012 | 08:39 PM
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Originally Posted by lowrange2
Do you think you could be a bit more specific? I know what you're getting at but does the OP?

Complete sentences are awesome.
I got where he is going. I've driven with a seized caliper before but like I said there is zero grab while driving. I let go of the wheel at speed with 0 drift and hit the brakes without my hands on the wheel with 0 pull either way.



Originally Posted by jmac108
First thing I would check is that u didn't kink the flex lines. Sometimes happens if u twist it over itself when you moving them out of the way while doing the brakes and forget to straighten them back out. If this is the case lines will be looped over themselves

Always best to start with the basics
Stupid me didn't think of that. I did take the brake off 3 times since my buddy needed to take my rotors. Probably twisted up the lines.
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