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

Soft Brake Pedal

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Old Jun 10, 2010 | 07:39 AM
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Default Soft Brake Pedal

My 96's brake pedal suddenly started requiring a couple of pumps on the pedal to get some pressure behind it. At first depression it will go about half way to the floor....a couple of pumps later it works fine. 5 minutes later, it's soft again. Is this a brake booster issue? And if so is there a "how to" thread on replacing the booster????? Thanks, Lee
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Old Jun 10, 2010 | 08:31 AM
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Sounds almost like a leak in the MC.
Check the brake fluid level first.

Last edited by vette079; Jun 10, 2010 at 09:00 AM.
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Old Jun 10, 2010 | 08:53 AM
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Originally Posted by petdoc
My 96's brake pedal suddenly started requiring a couple of pumps on the pedal to get some pressure behind it. At first depression it will go about half way to the floor....a couple of pumps later it works fine. 5 minutes later, it's soft again. Is this a brake booster issue? And if so is there a "how to" thread on replacing the booster????? Thanks, Lee
The usual test.....hard pedal=bad brake booster
soft pedal=air in the lines or bad master cylinder or system needs a complete flush.
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Old Jun 10, 2010 | 10:48 AM
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Originally Posted by runner140*
The usual test.....hard pedal=bad brake booster
soft pedal=air in the lines or bad master cylinder or system needs a complete flush.
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Old Jun 10, 2010 | 11:38 AM
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Old Jun 10, 2010 | 03:45 PM
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The seals in the master are probably shot.

Get yourself a master before you need front end work.
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