As stated toward the top, your master cylinder could be bad.
It's kinda like 2 pistons on one shaft, except the pistons are "O" rings
The shaft operates 2 systems--front brakes and the other, rear brakes
Should a problem be encountered w/ either "O" ring, you still are able to stop, with the other system.
This could be an issue.A leaky "O" ring
Another possibility is a proportioning valve---its kinda balances the pressures between front and rear---Sorta like new shower valves, flush the crapper and you do not get scalded, as with older non-balancing valves!
Then you got ABS. Should be "FTWDNKHTUB". For Those Who Do Not Know How To Use Brakes! This has got to be the most complicated system on a car!
Heck, you cannot scan the codes, unless you invest some major $$$ for a scanner, or pay the man. This too, could be an issue.
But out of all I have personally encountered.
In case you haven't gathered by my "Handle", Imma Jeep CJ kinda guy, and my heart lies with them and older Fords. See the Jeep CJ 5 & 7 forums, I excel there.
The biggest thing I see with a vehicle with a low pedal, is they just don't adjust their shoes out enough!
You can get kinda close, by removing the drum, rotate the self adjuster, spreading the shoes apart, then, install the drum. Do this until your drum will just kinda EZily go back on, without it being too tight, and you have to fight it on.
I'm pretty sure you do not have drums, yours is disc all the way around?
I'm sorry that I could not magically provide you an EZ fix, There are the other things I mentioned which might play a role, or have special procedures to get the pedal up. 'Bout all I can throw at you.
Others here, can still jump in and save the day.I hope so, I hate to see someone leave. Who Really Tried. With their head hung low
Thanks for puttin' up with me!
Images (click to enlarge)
Tuesday, July 5th, 2011 AT 4:03 AM