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Just replaced front brake pads and rotors, but my brakes arent working.
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hcfan101
New User
Aug 17, 2010, 3:13 PM
Post #1 of 7
(1692 views)
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Just replaced front brake pads and rotors, but my brakes arent working.
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I bled them and everything, tightened all bolts, still no pressure on the brakes.
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Sidom
Veteran
/ Moderator
Aug 17, 2010, 3:29 PM
Post #2 of 7
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Re: Just replaced front brake pads and rotors, but my brakes arent working.
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Knowing what type of vehicle you are working on would help?
When you say you have no brks, do you mean the pedal is going all the way to the floor?
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hcfan101
New User
Aug 18, 2010, 4:21 PM
Post #3 of 7
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Re: Just replaced front brake pads and rotors, but my brakes arent working.
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its a 1991 cadillac deville, and yes the pedal goes to the floor all the way
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hcfan101
New User
Aug 19, 2010, 2:09 PM
Post #4 of 7
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Re: Just replaced front brake pads and rotors, but my brakes arent working.
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????
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 19, 2010, 7:59 PM
Post #5 of 7
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Re: Just replaced front brake pads and rotors, but my brakes arent working.
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Sidom was on this so I left it alone but see it's been a couple days - sorry. Know we are all volunteers and most work full time. There could be a computer problem - sorry.
OK: I'll butt in and say when you've done brake work and can't get a "pedal" as I'll call it then there's either air still in the system after bleeding or many times on an older car especially the master cylinder in the course of bleeding manually which is common has just travelled into a new area of its bore which could be all crusty and tore the seals up right away and may bleed but not hold pressure again.
There are some other possibilities but not so common to me with this car.
Ideas for the fix. Plug off master cylinder and see if it will hold firmly. Try on car bench bleeding if it went dry of fluid air gets trapped and may not be so easy to get out. Usually that would result in a soft pedal but not NO pedal!
Some ABS systems will have specific procedures for bleeding if exposed. Just pads and rotors shouldn't have violated the hydraulics if system wasn't wide open. Most 91s didn't have ABS but could have.
My gut feeling is that the master cylinder tore up it's seals if there's no other seen issues. They don't leak in general when they do that - well yes but internally unseen not on the ground.
Best when saving calipers to retract the pistons by letting fluid out thru bleeder not pushing old fluid back up to master which is tricky to do and many don't. That's where the junky fluid would have accumulated from heat, any rust and just pushing that back up to master is really a no-no but done all the time especially by DIYers but shops have been known to do that too.
Again - my guess so far is master cylinder gave out even if not the original problem it very well could be now as said. IMO, a new one is not wasting money in that old of a car as it is a wearing part. Means you have to bleed out backs too if replaced too,
T
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Sidom
Veteran
/ Moderator
Aug 19, 2010, 10:17 PM
Post #6 of 7
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Re: Just replaced front brake pads and rotors, but my brakes arent working.
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You called Tom.......It's been busy
Looks like you've said the same thing I would..... Does sound like the masters gone south.
You or anyone is never butting in, as always jump in with the solid advise.......
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hcfan101
New User
Aug 22, 2010, 1:54 PM
Post #7 of 7
(1634 views)
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Re: Just replaced front brake pads and rotors, but my brakes arent working.
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Thank you very much, if thats not the problem ill let you know
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