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Old 08-22-2010, 10:38 AM   #16
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brakepads r and r


There is a lot of advise on this site that will 'get you by', but most people want to do it RIGHT. Part of brake maintenance is to flush the brake fluid every 2-3 years. Brake fluid is hygroscopic, and will absorb up to 6% water. It takes it right out of the air. What do you think that water does to the inside of your brake hydraulic components? The brake systems on modern cars are complex and expensive. Don't be pennywise and pound foolish_ flush that brake fluid.

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Old 08-22-2010, 01:31 PM   #17
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brakepads r and r


yes, but the brake fluid is not the problem right now , pedal going to floor sitting on driveway room temeperature. you have air in your lines. might have to re bleed the master. because even if your sytem was dirty and clogged it would still stop the brake pedal from going to floor .. right ?
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Old 08-22-2010, 02:24 PM   #18
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brakepads r and r


Quote:
Originally Posted by oldrivers View Post
yes, but the brake fluid is not the problem right now , pedal going to floor sitting on driveway room temeperature. you have air in your lines. might have to re bleed the master. because even if your sytem was dirty and clogged it would still stop the brake pedal from going to floor .. right ?
if the rear calipers are also used for the parking brake, it could be they are not adjusted as well.

since the OP has posted only once, everything at this point is a guess. Need more info.

so,

air in the lines

park brake adjust

caliper not sliding properly

pad installed incorrectly (unlikely but I know of a few things that could have happened to cause this with improper installation)

damaged master cylinder (certain GM cars in particular are easily damaged when bleeding the brakes improperly)

ABS modulator needs to be cycled (some cars require this when bleeding the brakes)

I would suspect one of the first 2 as the likely culprit and without more info, that is the best I can guess.
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Old 08-22-2010, 11:25 PM   #19
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brakepads r and r


Pad replacement is always the best time for a flush. Hook a hose to the bleed screw,back it off, spread the caliper, tighten bleed screw, install pads. complete all four corners, clean out Master Reservoir, Fill with fresh brake fluid, pump up peddle, refill Master. Old school start bleeding furthest from the Master, using a Vacuum pump or a second person at the peddle. Check and fill master during and after each Caliper. If peddle pumps up there is air in the system, bleed each corner again after pumping up till all air is removed.


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Old 08-23-2010, 12:03 AM   #20
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brakepads r and r


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changed brake pads front and rear and bled all calipers, brake pedal goes all the way to the floor,why?
Did the pedal go to the floor before changing pads?
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Old 08-23-2010, 09:13 AM   #21
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brakepads r and r


agree that changing you break fluid every 2 years is a good idea. I however usually get around it every 3 to 4 years.

Back to the OP's problem. I would re bleed the breaks again. Sounds like you just have some air in there.

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