Question about 2001 Pontiac Grand Am SE
My break pedal is all the way to the floor, tried bleeding them and seems to work, then when I turn the car on the pedal returns to the floor.
The pedal is all the way to the floor because there is no fluid in the lines . Bleeding procedure is to start at the longest line and bleed the air out at each line until you get to the shortest. You will need assistance with the bleeding as some one has to pump and hold the pedal while the bleed screw is released to let the air out.
Posted on Feb 15, 2014
My first guess would be the master cylinder is blown.
Posted on Feb 15, 2014
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Posted on Jan 02, 2017
SOURCE: anti lock brakes
Well this is very serious I hope you deal with it right away. You mentioned that sometimes the pedal was hard,do you mean that its all the way up and it doesnt feel like you have power brakes?? If so have you noticed any sounds like air escaping (swoosh sound when brakes applied)? Failure of the power booster causes pedal to become very hard and could possibly be your problem for hard pedal if I understood you correctly. check to make sure that vacuum to the booster is conected properly and hose not kinked..Now for the solution for the pedal fading to the floor... You either have air in your brake system, A bypassing master cylinder , or a hydraulic leak...Were your brakes serviced recently?? if so try bleeding your brake system first...That would be the first step if still the problem persist I would isolate exactly where the problem was coming from.. To do this you would start at the passenger rear wheel and line clamp the brake hose to make that part of your brake sytem inoperable...when clamped try your brakes and note if brakes improved or had know affect on system (when testing obviously im not suggesting you drive to determine results of test procedure)repeat test for each wheel you have isolated the problem when brakes feel normal with one wheel clamped,which ever it may be.. This isnt as hard as it might soun and if you are confused at all dont hesitate to ask questions... Remember the only dumb question is the one you fail to ask I would hate for you to get into an accident ... Good luck!!!
Posted on Dec 27, 2008
SOURCE: bleed brakes but no pedal
Good! You bled the master cyl. before installation! The proper order of bleeding the lines, is to start with the wheel the greatest distance from the master cylinder. Then work your way to the next greatest distance, and last, the closest wheel. Make sure all air is removed from the lines before you proceed to the next wheel, and frequently check the master cyl. level, because, as I'm sure you know, if you **** in air at the master, you have to start all over again. I'm assuming you don't have a power bleeder, so with a helper do this with car running (make sure it's on safety stands and not going to fall on you!) Pump pedal 3 times, no need to mash the pedal into the floor, just 3 pumps 1/2 way down, hold 3rd pump at half way down level while bleeder is opened, when flow is about to stop at bleeder, close bleeder and repeat til no evidence of any air. Let me know how it goes and if you need any help.
Posted on Apr 21, 2009
theres a leak somewhere. fill master then pump pedal 15 times then take alook under the car and look for a leak, for it to drain overnight means its a pretty big leak you should be able to spot it, try that. hope this helps.
Posted on Jan 06, 2010
double check fluid.you have air or are losing hydrolic pressure somewhere. leak in master cylinder can do this. also vacume and air leak in the booster unit. double check bleading points on each wheel.
Posted on Mar 11, 2010
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