# Jeep brake help needed I suck... **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [October 7, 2007, 2:45pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595 "2007-10-07T14:45:21Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![matter](https://avatars.discourse-cdn.com/v4/letter/m/97f17d/32.png) [@matter](https://forums.speedlife.net/u/matter)\ **Post date:** [October 7, 2007, 2:45pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/1 "2007-10-07T14:45:21Z")
Alright, 2001 cherokee Rear disc Conversion done 3 years ago, it worked awesome till now Brother replaced the rear line with stainless steel brake line to the rear T on the axle, let the master cylinder run dry…(retard) We bleed, the pedal sucks, its squishy all the way down, barely stops at all. We bleed again (2man bleeding), same result… The pedal feels horrible, but it does stop, barely. We thought it might be a seized rear caliper. We checked em, the slider pins where seized, we replaced, all new, float awesome. Bleed brakes, the pedal feels the same. He replaces the rear side caliper brake lines with stainless steel ones thinking its stretched rubber lines causing it. Bleed (2man), pedal STILL feels the same. We figure its the Master Cylinder, well we have a new one laying around. We put a brand new master cylinder in, rebleed all the freaking brakes(2 man) Still no pedal Bleed using gravity bleed. Still no pedal, it stops but the pedal has to be all the way to the floor, and its squishy all the way down to the last 1/2". The Jeep has all hard lines for brakes. Zero rubber lines at all. Footnotes for lazy bastards: Replaced almost everything, still no pedal ---
**Author:** ![Joe\_Omerta](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@Joe\_Omerta](https://forums.speedlife.net/u/Joe_Omerta)\ **Post date:** [October 7, 2007, 3:04pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/2 "2007-10-07T15:04:28Z")
if you have abs you will probably need a scan tool to engage the abs unit to properly bleed the system. or if u have a wiring diagram u might be able to cycle it w/ jumper wires but i wouldn’t recommend it. ---
**Author:** ![matter](https://avatars.discourse-cdn.com/v4/letter/m/97f17d/32.png) [@matter](https://forums.speedlife.net/u/matter)\ **Post date:** [October 7, 2007, 3:08pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/3 "2007-10-07T15:08:32Z")
no abs on this jeep ---
**Author:** ![Joe\_Omerta](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@Joe\_Omerta](https://forums.speedlife.net/u/Joe_Omerta)\ **Post date:** [October 7, 2007, 3:12pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/4 "2007-10-07T15:12:59Z")
how much fluid have you poured into the vehicle so far? also, double check all connections at the junctions, calipers, master cylinder, brake hoses, everything. might have to bleed the master cylinder first then the rest of the system. and make sure the caliper pistons are not leaking. ---
**Author:** ![matter](https://avatars.discourse-cdn.com/v4/letter/m/97f17d/32.png) [@matter](https://forums.speedlife.net/u/matter)\ **Post date:** [October 7, 2007, 3:18pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/5 "2007-10-07T15:18:44Z")
no leaks, and by now we have gone through about a gallon of brake fluid. whats the best way to bleed a master cylinder on car? I know the lines feeding back into it, we tried that, no work. I tried just opening the lines as he holds down the pedal, straight fluid comes out, no bubbles out the line, no bubbles to the top of the master cylinder. ---
**Author:** ![Joe\_Omerta](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@Joe\_Omerta](https://forums.speedlife.net/u/Joe_Omerta)\ **Post date:** [October 7, 2007, 3:25pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/6 "2007-10-07T15:25:35Z")
is there a possibility that the rear seal on the master cylinder is leaking and filling the brake booster w/ fluid? ---
**Author:** ![nitroinsane](https://avatars.discourse-cdn.com/v4/letter/n/d26b3c/32.png) [@nitroinsane](https://forums.speedlife.net/u/nitroinsane)\ **Post date:** [October 7, 2007, 3:31pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/7 "2007-10-07T15:31:52Z")
best way to bleed a master is bench bleeding some cars its the only way. then bleed the brakes how is the fluid coming out at the right rear is it burping air still or is it smooth ur pumping 3 to 4 times and holding? then no letting off the pedal till the bleeders tight. iam just going over the obvious first ---
**Author:** ![matter](https://avatars.discourse-cdn.com/v4/letter/m/97f17d/32.png) [@matter](https://forums.speedlife.net/u/matter)\ **Post date:** [October 7, 2007, 4:11pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/8 "2007-10-07T16:11:41Z")
fluid comes out streamlike at all 4 corners… perfect we jacked up the rear end and threw her in drive, now we have ZERO rear brakes for some reason. But that shouldnt effect the pedal at all should it? we have stream-like fluid out the rear lines, no rear brakes though. Maybe a fucked proportioning valve? I am spent out of fucking ideas here. ---
**Author:** ![matter](https://avatars.discourse-cdn.com/v4/letter/m/97f17d/32.png) [@matter](https://forums.speedlife.net/u/matter)\ **Post date:** [October 7, 2007, 4:14pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/9 "2007-10-07T16:14:34Z")
[quote=“Joe\_Omerta,post:6,topic:36595"”] is there a possibility that the rear seal on the master cylinder is leaking and filling the brake booster w/ fluid? [/quote] we just replaced the master cylinder and there was no fluid in the booster. ---
**Author:** ![Joe\_Omerta](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@Joe\_Omerta](https://forums.speedlife.net/u/Joe_Omerta)\ **Post date:** [October 7, 2007, 4:29pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/10 "2007-10-07T16:29:57Z")
are the calipers frozen? ---
**Author:** ![matter](https://avatars.discourse-cdn.com/v4/letter/m/97f17d/32.png) [@matter](https://forums.speedlife.net/u/matter)\ **Post date:** [October 7, 2007, 4:31pm UTC](https://forums.speedlife.net/t/jeep-brake-help-needed-i-suck/36595/11 "2007-10-07T16:31:06Z")
they are floating calipers, we replaced the slide pins and lubed em all up. Maybe the pistons are frozen, not sure, I guess I could take a looksie.