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No brake pressure when car is on?

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Old 02-15-2012, 05:51 PM
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Default No brake pressure when car is on?

Yesterday I was driving and lost brake pressure. I wasn't far from home so I drove back home using the engine to brake the car. Once home I got under the car to notice that my passenger tire hose had rotted and was the cause of the problem. Note: I never lost all brake fluid though I did get the check brake fluid light and stability program disengaged.

I went to the local advanced auto and got a new brake line and put it on. This evening I bled the brake caliper (inner bleeder screw first, followed by outer). Though I get good brake pressure when the vehicle is off, I lose it when the vehicle turns on. I have since bled the passenger rear, driver rear and am about to rear bleed the passenger front again, followed by driver front.

Is there something else that I am missing? I read the FAQ but didnt see anything about this. I'm assuming there is still just a little air in the lines and as I finish bleeding than it will firm up? Brake booster adding pressure once the vehicle is turned on?

TIA
Old 02-15-2012, 06:04 PM
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what does your fluid level look like? is there anything squirting onto your brake booster from your master cylinder?
Old 02-15-2012, 06:15 PM
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Fluid is good and now clear (new fluid) no squatting that I can see. I have one more wheel to go but I am not confident that it will be good after this. May just tow it tomorrow.
Old 02-15-2012, 06:56 PM
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Abs cars I usually bleed it first with it off then with the car running.
Old 02-15-2012, 07:34 PM
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Im bleeding them again right now. Just finished the backs. I started the car a few times the first time around, not going to do it at all now. Luckily, The g.f is being a good sport and pumping the brakes for me lol Guess my Valentines surprise yesterday is paying off today
Old 02-16-2012, 09:49 AM
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Probably need to do some searching, but I remember an issue where the ABS pump does not fill properly after all fluid is drained.
Old 02-16-2012, 05:27 PM
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Originally Posted by dr.duct_mossburg
Im bleeding them again right now. Just finished the backs. I started the car a few times the first time around, not going to do it at all now. Luckily, The g.f is being a good sport and pumping the brakes for me lol Guess my Valentines surprise yesterday is paying off today
any time you toss your girlfriends salad, she will help you with car stuff.
Old 02-16-2012, 05:50 PM
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Originally Posted by RADEoN
any time you toss your girlfriends salad, she will help you with car stuff.
****, I didnt even take her to dinner. lol Just ordered some pizza to eat in between bleeds (no pun intended), Ha. She knows her place Jk, Shes a good sport.
Old 02-16-2012, 05:52 PM
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BTW, I bled all 4 wheels x2 and it was good after that. The pedal was still very low but I gave it a test drive just to see if I could get it to a repair shop and as a drove it got a tad bit better. When I got in the car this morning everything was perfectly good (pressure wise). Thanks for the aid fellas. First time I ever had a PITA brake change.
Old 02-16-2012, 06:01 PM
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Are you in any of the states involving the brake line recall ?
Old 02-16-2012, 11:29 PM
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No idea. Im going to replace them all with steel braided in the summer and just be done with it. I have plans to do rotors, pads, lines and fluid all at once.
Old 02-21-2012, 03:08 PM
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Originally Posted by jmargo
Are you in any of the states involving the brake line recall ?
Brake line recall ? What states? Anymore info?

EDIT: Nevermind, I just googled it. Do I have to be under a certain mileage to qualify for this?



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