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Old 02 Jul 2008, 08:03 am
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Default 2003 Odyssey - Brakes slowly go to the floor

1) Fluid is full and no fluid leaks
2) Brakes have had no work in 60+ days
3) When peddle is pushed brakes engage but as more pressure is applied the pedal slowly goes to the floor and hits the mechanical stop. The car stops but the braking is not what it should be. I should be able to hit the brakes hard and the car really stop quickly. Instead I get a gradual stopping. The pedal feels like it has two stages. The first is sort of what I would expect in that a little push gives a little braking. Then slightly more gives slightly more braking. Then I get a second stage where more pressure doesn't result in more rapid stopping but instead the pedal slowly glides to the mechanical stop.

It makes me think it has air in the lines or something but I have not had the system open ever where air would get in - or at least in any way I can think of that would allow air in the lines.

Any ideas?
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Old 02 Jul 2008, 10:51 am
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Default Re: 2003 Odyssey - Brakes slowly go to the floor

This exact thing happened to me, although i drive a 91 accord, i suspect its the same problem. most of the time it would slowly sink to the floor while i was driving, it was hard to completely stop because i had to keep pumping the brakes to get stoped. it wasnt a good feeling not be able to stop on a dime, so i ended up buying a master cylinder from Napa for about $40-$60. I guess the piston in the brake cylinder went bad so i had to buy another, but it was one of the easiest fix's ive ever done, my dads a mechanic so i had a huge paved shop and all the tools i needed to do it, im 18 and havnt done this before but all it takes is a bottle of brake fluid and a couple wrenches, after (bench bleeding it) tou just bolt it in. although you have to bleed the whole brake system, which is farely simple you just have to have someone to help you pump the brake while you loosen each individual brake line by the tires. I just took my tires off and jacked up the car a few inches so it was easiar to get to. I suspect if you have someone to help you it wont take more than a couple hours from start to finish. if you need more assistance on what to do just ask, if you dont take it to a mechanic for a proffesional opinion and end up getting the master cylinder, i can pretty much give you a step by step how-to if needed. Hope this helped, -Eazy.
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Old 04 Jul 2008, 12:08 pm
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Join Date: May 2008
Location: Fresno, CA
Posts: 46
Default Re: 2003 Odyssey - Brakes slowly go to the floor

This happen to me with my 95 integra. I ended up replacing the power booster and master cylinder. You might as well replace both because if the master cylinder piston is bad the the break fluid maybe collecting in the power booster.
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