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brake peddle

I love my Chevy Chevette!
Posts: 2
Joined: 08/12
Posted: 08/06/12 02:19 PM

My brake peddle goes to floor & I have vertually no brakes. Why?  

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My first time was in a Chevy
Posts: 181
Joined: 04/12
Posted: 08/08/12 12:22 AM

check the fluid level in the brake master cylinder...

does it rise as the pedal goes to the floor..??? indicating the fluid is bypassing the seals on the master piston..

as soon as your foot moves off the stop and about 3/4 at the pedal.. the seals should move across the fill passages in the top of the master cylinder.. so there should NOT be any additional fluid movement..

your 84 is 28 years old.. it could have a BAD master cylinder...

if you are NOT familiar with bleeding brakes...  most of the time.. when there is NO fluid loss.. with 2 people you can change the master and not have to bleed the entire system..

i am at a friends house as my home net connection is down right now...

you will also want to jack up each tire.. so its off the floor..

verify that the wheel bearing is NOT damaged and allowing too much movement.. there is NOT supposed to be any play at all...

failed wheel bearings are not odd on a C4.. it will allow the wheel and rotor to tilt...  causing excessive brake pedal movement to squeeze the pads tight against the rotor faces..  

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V-6 Camaros rule!
Posts: 83
Joined: 01/12
Posted: 08/14/12 07:48 PM

A low pedal indicates worn pads or air in the system, or a fluid loss.

If you can pump the pedal and it comes back up then you have air in the system.

If pumping the pedal does not change the pedal height. Then I would check the system for any fluid leaks. All the pads and rotors maybe worn out.

You have some trouble shooting to do. Let us know what you find..  

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