C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

No Brakes!!

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Old Jul 18, 2005 | 09:26 AM
  #1  
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From: 89 Coupe L98 Auto 54k Dk Red Med Oak Forest, Illinois
Default No Brakes!!

Heres the story....driving on Sat. everything OK, then the brake pedal got soft, then it went all the way to the floorboard, car barley stopped and the "Brake" light goes on when the pedal goes to the floor. No brake fluid leaking from anywhere....where do I start to get this problem fixed????
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Old Jul 18, 2005 | 10:35 AM
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Simplest and cheapest, bleed the entire system. You'll be able to get a good close look at all of the calipers and as you go around one by one, if there's a leak, you'll find it fast.
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Old Jul 18, 2005 | 10:37 AM
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If there is fluid in both resevoirs I would strongly suspect the MC.

Last fall I installed a rebuilt MC into my '88; it cost $45 from the local AC Delco dealer.

Last edited by 65Z01; Jul 18, 2005 at 10:40 AM.
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Old Jul 18, 2005 | 10:47 AM
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First guess would be master cylinder. Usually when you get a soft pedal and no brakes we think M/C. Hard pedal we think brake booster.
With a new M/C you should be in good shape. Might be a good time to do a complete flush and bleed.
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Old Jul 18, 2005 | 11:22 AM
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Boiled fluid can incorporate air which can give rise to spongey feel.
Pedal to the floor is usually low or no fluid or a bad master cylinder
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Old Jul 18, 2005 | 12:45 PM
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Looks like you got some good advice Jack. If there is anything I can do, give me a call.
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Old Jul 18, 2005 | 02:48 PM
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From: 89 Coupe L98 Auto 54k Dk Red Med Oak Forest, Illinois
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Ok, thanks everybody...I'm gonna try and relace the MC first and do a complete bleed/fluid change
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Old Jul 28, 2005 | 01:33 PM
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From: 89 Coupe L98 Auto 54k Dk Red Med Oak Forest, Illinois
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Put in the new master cylinder yesterday, installed speed bleeders and did a complete fluid change/bleed.....good as new. Thanks to everyone for their help!!
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