ok i have done everything. i cannot figure this out. i have new calipers, new pads, new shoes, new drums, new master cylinder, new brake lines, and i am still getting brake pedal to the floor. its only happening when i turn extreme left though. something else i found is that when i do have brake pressure, and i stand on them, i cannot move my steering wheel, its like the power steerin locks up, what the f@!*??????? please help.

 

do you have the hydro boost brake system?

GM's ran them and still do on certain heavy models.

full lock and loss of brake/steering means the pump is not creating enough pressure to work both systems, try increasing the engine rpm, in neutral, when this occurs. Can you steer?

hydro boost systems have a bypass valve for the brakes, they create so much presure that you would blow out your lines or seals in the brake system if you stood on the pedal.

does you vehicle stop with normal brake pedal pressure?
have you re-bleed the system?

 

i dont think this has the hydro boost, not for a light cherokee. the brakes work great, and after converting to the stainless braided lines, it about puts you through the windshield, but for some reason when you turn left, the pressure goes away, and i dont see any leaks anywhere, and i know for sure that the lines are completely bled out.

 

would this brake problem make sense if my wheel bearings were bad?

 

not really, if it were from bad wheel bearings it really would be doing it all the time.

 

You really need to confirm the boost type.

Vacuum or hydro. Sound like hydro to me

 

x2

Take pics and post them if you need help in identifying the system

 

FOUND THE PROBLEM!!!!!!!!!!!!!!

the driver side caliper i just bought is a different year than my pass side, which put the banjo bolt location in a different spot, what does that mean? my banjo bolt was hitting the knuckle about 1/16" before my steering stop bolt was, causing the caliper to tweak and do weird ****, what a boner deal, thanx for the help peeps.