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Old 06-18-09, 06:33 PM   #1 (permalink)
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Pedal, fading... wallet, draining...

Ugh! Freakin cars!

So on my 1995 Legend GS, the brake pedal fades down to the floor almost if I'm on it hard or for a while (like in traffic). And it flared-up literally on the way to pick-up my wife's RX300 with a new (to me) transmission.

So I checked the brake fluid resevoir and that's okay, and now I'm out of ideas about what it might be able to do myself on this. Think Master-Cylinder? How much would that be? anybody know?

-DaBrizat
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Old 06-19-09, 12:54 AM   #2 (permalink)
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try bleeding the brakes first, then if that doesn't work get a MC.
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Old 06-19-09, 08:14 PM   #3 (permalink)
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So now its the next day and I wanted to take The Ledge to my neighborhood mechanic to see what he thought, and the dang thing was working (almost) like a champ. I would have thought anything different if I hadn't felt the pedal sink all those times the day before...

So bleed the brakes, eh? Sounds better'n a MC! Where does the power assist come from? Thru the ABS?, or is there a dedicated power assist thing?

Thanks for any help...
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Old 06-19-09, 08:42 PM   #4 (permalink)
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check your rubber lines and see if one of the have a bulge in it. This is a really common thing on older cars. Have someone press the brake pedal very hard while the car is running and look at the rubber lines to see if one is deformed. If that isn't it check the brake fluid to see if its dirty (green or brownish/black) If it is try a brake flush.
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Old 06-19-09, 10:46 PM   #5 (permalink)
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Quote:
Originally Posted by dabrizat View Post
So now its the next day and I wanted to take The Ledge to my neighborhood mechanic to see what he thought, and the dang thing was working (almost) like a champ. I would have thought anything different if I hadn't felt the pedal sink all those times the day before...

So bleed the brakes, eh? Sounds better'n a MC! Where does the power assist come from? Thru the ABS?, or is there a dedicated power assist thing?

Thanks for any help...
yes power assist comes from the brake booster which is fed vacuum through a one way check valve from the intake manifold. Its not where you want to be looking for this problem.

1. air in lines
2. bulging/pin prick leaking rubber line
3. master cylinder

those are the things to check. Also, try registering at acuralegend dot org for more/better answers.
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Old 06-23-09, 02:44 PM   #6 (permalink)
 
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I had the same thing happen to my car and it ended up being the master cylinder. Total cost was around $500 but it would be much cheaper to diy if you know how. It only takes a couple hours at the most and a MC shouldn't be too horribly expensive.
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