Help nooo breaks!!!!!
10-14-2011, 06:05 PM
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Year: 1992
Model: Cherokee
Engine: 4.0
Help nooo breaks!!!!!
Well i put on new calipers, rotos, pads today. Well everything went together fine. Well i bleed them twice and they felt good when the jeep w,s off. But when u start it up it goes straight to the floor. So i bleed them a couple more times with the same result. So when I start it up the peddle goes straight to the floor and the brake light comes on. I can pump the brakes and they get better and the light goes off but as soon as i hit the gas it goes to the floor and the light comes back on. I noticed when I bleed the back they spray out a little and then stop and nothing else come out. Unlike the front, they just flow out. I need help does anyone have any ideas before i have to take it to a shop?????
10-14-2011, 06:27 PM
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Year: 1991
Model: Cherokee
Engine: 4.0 L
You have a leak somewhere sir. air getting in.
or bad wheel cyl in rear. Hmmmmmmm...92......rear diverter?
you see any wetness on ANY of the steel brakelines underneath?
might also be time for a master cylinder rebuild... fluid clean through and through? Brake booster has tight vacuum line(s)?
brake boosters sometimes go. had to replace mine at 120 thousand miles..
just ideas sir.
cpnwrench
10-14-2011, 06:38 PM
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
You have a leak somewhere sir. air getting in.
or bad wheel cyl in rear. Hmmmmmmm...92......rear diverter?
you see any wetness on ANY of the steel brakelines underneath?
might also be time for a master cylinder rebuild... fluid clean through and through? Brake booster has tight vacuum line(s)?
brake boosters sometimes go. had to replace mine at 120 thousand miles..
just ideas sir.
cpnwrench
10-14-2011, 08:16 PM
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Year: 1991
Model: Cherokee
Engine: 4.0 L
Busted......yeah I know, but you still can get them ya know!
I did it on my vette, it was messy, but it worked!
yeah, I know china, cheap metal, cheap non-butyl-polyetheleneous-nitril-like composites that last one day replacements from autozone, o'reillys', advance, etc etc etc. but hey thats what we got.
OP.....sorry for any misinformation, but yeah, re-built M.C. might be in order, or if you can find one a rebuild kit! HA! see, I can type when friday comes!
cpnwrench
10-14-2011, 09:50 PM
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Year: 1992
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10-14-2011, 09:51 PM
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10-14-2011, 10:18 PM
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Year: 1992
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Originally Posted by Xj1990
Bleeder screw should be on the top.
10-14-2011, 10:49 PM
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Year: 2001
Model: Cherokee
Engine: 4.0
Oooh, /brakes/
You have no brakes? I thought he was talking about a lunch break, or a coffee break....
And to stay on topic: You still have air in the system, find out why. Check for leaks, check that bleeder screws are correct. I find that making my own one-man bleeder is the best way to bleed. Get an empty coke bottle, fill 1/4 way with brake fluid, drill hole in cap and insert any given length of vaccuum hose until the hose is immersed in brake fluid. Put the other end of the hose on the bleeder screw, make sure the resevoir has lots of fluid, crack the bleeder and pump until theres no more bubbles.
Check resevoir level religiously, amd make sure you bleed in the correct order...RR, LR, RF, LF.
You have no brakes? I thought he was talking about a lunch break, or a coffee break....
And to stay on topic: You still have air in the system, find out why. Check for leaks, check that bleeder screws are correct. I find that making my own one-man bleeder is the best way to bleed. Get an empty coke bottle, fill 1/4 way with brake fluid, drill hole in cap and insert any given length of vaccuum hose until the hose is immersed in brake fluid. Put the other end of the hose on the bleeder screw, make sure the resevoir has lots of fluid, crack the bleeder and pump until theres no more bubbles.
Check resevoir level religiously, amd make sure you bleed in the correct order...RR, LR, RF, LF.
10-14-2011, 10:59 PM
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Year: 2000
Model: Cherokee
Engine: 4.0L
Bleeder screw always goes on top.
Air rises in liquid, so the air would need to escape out of the top. How can it escape if the Bleeder hole is at the bottom, and the air is at the top?
Air rises in liquid, so the air would need to escape out of the top. How can it escape if the Bleeder hole is at the bottom, and the air is at the top?