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I change the brake booster and the brake still go all the way to the floor

Change the the brake booster still no brakes

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Well the brake booster evidently wasn't the problem. If the brake booster is bad the brake pedal will be hard. Since you have a soft brake pedal and providing there are no leaks in the system and your not really loosing fluid, I would suggest the master cylinder being bad. It doesn't look like you purchased a bosster/master cylinder assembly together as sometimes that's the way you can purchase the booster. Just remeber in the future a hard brake pedal is the a booster problem (in most cases). Hope this helps....

Posted on Oct 19, 2013

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How did you bleed your brakes or did you even do that? their should be a little nipple on your calipers or even the brake booster to bleed the system.

Posted on Oct 19, 2013

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Posted on Jan 02, 2017

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SOURCE: 1998 chevy s10- brake pedal goes to the floor-

Did you put fresh fluid in the master cylinder? I really think you still have air in the lines. To bleed manually, start with the bleeder the greatest distance from the master cylinder, car running, helper pushing down about half way on brake pedal and releasing 3 times, on 3rd time, holding pedal down to half way depressed point while you open the bleeder valve. Repeat until you are sure all air has been flushed out. Check master cyl reservoir level often, because if it gets low and you **** air into the system, you have to start all over again. Go to wheel next greatest distance from master cyl, repeat above, working your way to wheel closest to master cyl last.

Posted on Apr 12, 2009

emissionwiz
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SOURCE: brake pedal dropping to floor

do u have the antilock brake bleeding tool? if not you will need to have the dealer bleed the brakes, the ABS control valve must be electricaly held open to bleed the brakes there of course is a special tool for this.

Posted on Oct 18, 2009

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SOURCE: Brake pedal goes nearly to

I would go with not bled correctly

The booster should hold up with a hard pedal until
you start the engine, then vacuum causes it to move
down when pressing on the brake

Posted on Sep 16, 2011

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