Ok first let me start by saying that the car driven only once a week now...it sits at my home while i go to school downtown during the week. My issue at first was that both of my rear calipers were seizing up. So i noticed the floating pins were a little stuck so i lubricated them back up. That didn't fix the problem. Next was that i thought the piston was stuck. So i broke them both loose and now they go in and out easy. That still didn't fix the problem. Next i thought about bleeding the brakes and flushing out some brake fluid. When i started to bleed the brakes some nasty brown fluid came out about 10 times for each caliper with the bleeder. I bled the brakes until the fluid came out nice and clear. Now when i took the car for a drive i have brakes just like a normal car except when i really push on the pedal it goes to the floor! Another issue is now when i step on the pedal and pump it up my idle goes up about 600 rpm! I have no idea what the problem could be. I don't think there is air in the lines because when i bled them i had no bubbles at all. Someone help me out with this i'm stuck...i just wanna drive me car lol

 

anyone?

 

Bleed all 4 corners and try again.

 

i think that you blead it passanger back drivers back passanger front and then driver front correct me if i am wrong

 

The increased idle is from the brake booster regenerating vacuum. It is normal. Regarding the pedal, is it sinking? Are you losing any fluid?

 

but the idle increases about 600 rpms...that means it goes from 700-to 1300...that's way too much and it never did that before. And the brake pedal sinks...it comes back like it should but i can just push it to the floor...no i'm not leaking fluid anywhere

 

Hey,
Get 4 needle vise grips. Clamp off all 4 brake lines. This will seperate the calipers from the master cylinder and booster. So you can trouble shoot. With the car on try to recreate the problem. The pedal should barely drop and be rock hard. Be patient and try hard sustained pushing and feel for dropping, then softer sustained pushing, repeat this several times.

If you try that to find nothing. Check the 1way check valve for the booster. Make sure it is working. and is in the right direction. If you have a vacuum pump place the booster on vacuum and pump the pedal a few times. Vacuum should not drop much maybe a few psi.

If still nothing. Remove the mastercylinder from the booster and check for fluid seapage. Sometimes the mastercylinder leaks fluid into the booster. Rarely but it does happen. If you find seapage, replace the master cylinder.

In my opinion the problem lies w/in the booster. The booster is the only part of the braking system that can raise your idle by that much. GL

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigkvn77 &raquo;</TD></TR><TR><TD CLASS="quote">Hey,
Get 4 needle vise grips. Clamp off all 4 brake lines. </TD></TR></TABLE>

Do not do that. You really don't want to find out the hard way that you damaged the lines.

OP, if the pedal is sinking and you are not losing fluid, the master cylinder is most likely the culprit. The RPM increase is higher than usual because your brake pedal is displacing more than usual.

 

that's what i was thinking too...but why would the master cylinder just stop working at the same time my rear brakes happen to start seizing up? All i did was bleed the system why would i just randomly go bad like that at the same time i worked on the brakes?