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Old 01-14-2012, 06:55 PM   #1
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Default Brake fluid leaking?

I have a 95 grand and I am loosing brake fluid, I thought it was leaking from my abs pump, so i Sealed it and thats not the leak.

If the master cylinder has a internal leak, where would the brake fluid go?

There was a wet spot in the drive way, but when i put the jeep in the garage, there were no obvious signs of a leak.

Its a very slow leak and I have had a soft pedal for awhile now.

So i am thinking a bad master cylinder but i wanted to get other opinions

Thanks

Rich
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Old 01-14-2012, 07:59 PM   #2
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Check the hoses, calipers, and hard lines for leaks. The master can leak out the back into the booster.
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Steering stabilizers will not cure or cause death wobble, they only mask the real problem that is causing death wobble. Oil pumps do not make pressure, they create flow. Bearing clearence and restrictions make pressure. It's the crank sensor.
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Old 01-15-2012, 06:03 AM   #3
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A '97 cherokee with spots in the driveway!?? There's a new one Are you sure the spot was brake fluid? Why assume the worst, when did you last inspect your rear brakes? Yes.. They DO have rear brakes. When they are worn excessively, brake juice can leak by the wheel cylinder seals. I'd look there. If it was leaking out your ABS or MC, I think you'd see traces of it on those componants, and if it was leaking internally, you wouldn't have spots on yer driveway wouldja? Just my $0.02
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Old 01-15-2012, 08:55 AM   #4
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A 95 has rear disc brakes, so no wheel cylinders .
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Steering stabilizers will not cure or cause death wobble, they only mask the real problem that is causing death wobble. Oil pumps do not make pressure, they create flow. Bearing clearence and restrictions make pressure. It's the crank sensor.

Last edited by Bustedback; 01-15-2012 at 01:25 PM.
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Old 01-15-2012, 11:46 AM   #5
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Quote:
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A '97 cherokee with spots in the driveway!?? There's a new one Are you sure the spot was brake fluid? Why assume the worst, when did you last inspect your rear brakes? Yes.. They DO have rear brakes. When they are worn excessively, brake juice can leak by the wheel cylinder seals. I'd look there. If it was leaking out your ABS or MC, I think you'd see traces of it on those componants, and if it was leaking internally, you wouldn't have spots on yer driveway wouldja? Just my $0.02
Thanks but if you read my post its a 95 grand cherokee, and yes the fluid in the driveway was brake fluid. I know what brake fluid looks like and feels like.

As for the rear brakes they are DISK brakes, and how do i know I'm leaking brake fluid, My master cylinder is out of Brake Fluid.

If it is leaking inside the master cylinder which I have heard they do, where does the fluid go??
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Old 01-15-2012, 01:17 PM   #6
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if it's leaking inside the master, it's going into the booster.
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Old 01-15-2012, 01:27 PM   #7
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As stated in my first post.
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Steering stabilizers will not cure or cause death wobble, they only mask the real problem that is causing death wobble. Oil pumps do not make pressure, they create flow. Bearing clearence and restrictions make pressure. It's the crank sensor.
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Old 01-15-2012, 01:27 PM   #8
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Quote:
Originally Posted by Bustedback View Post
Check the hoses, calipers, and hard lines for leaks. The master can leak out the back into the booster.
Quote:
Originally Posted by mideerslayer View Post

If it is leaking inside the master cylinder which I have heard they do, where does the fluid go??
The master cylinder has o-rings that can go bad, leaking fluid into the brake booster. This could explain your loss of fluid and soft pedal.
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Old 01-16-2012, 03:21 PM   #9
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Ok I took the master off and looked inside the brake booster and its try as a bone. So I went to the Junk yard and picked up a ABS pump, because there was all kinds of wetness under neath the ABS bump.

So when I put the lines back on, should I use any teflon tape on the treads for the brake lines?

One of the valves on the old ABS pump was leaking and i sealed it with jb weld, but I am thinking it was leaking from the bottom.

I will find out in a few, but the main question is about the threads on the lines if i should seal them with tape or something else just to be safe?

Thanks

Rich
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Old 01-16-2012, 03:37 PM   #10
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You should never use any tape/sealer on brake line fittings. It could disintegrate and possibly contaminate the system.
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Old 01-16-2012, 03:37 PM   #11
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Never use teflon tape or any kind of sealer on brake lines. The flared ends on the steel lines is what seals them.
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Steering stabilizers will not cure or cause death wobble, they only mask the real problem that is causing death wobble. Oil pumps do not make pressure, they create flow. Bearing clearence and restrictions make pressure. It's the crank sensor.
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Old 01-17-2012, 12:06 AM   #12
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HI jack for a second... Blue I had one thoes Dodge Omni's back in 80, ran it into the back of a stopped semi on the interstate, I was doing about 40 after skidding for 165 feet according to the State Cop... LOL Just happy to be alive. I return this thread to you
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Old 01-17-2012, 08:33 AM   #13
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Quote:
Originally Posted by 94zjdriver View Post
HI jack for a second... Blue I had one thoes Dodge Omni's back in 80, ran it into the back of a stopped semi on the interstate, I was doing about 40 after skidding for 165 feet according to the State Cop... LOL Just happy to be alive. I return this thread to you
Glad you were okay. The stock brakes on them were a joke, that's why most of them are gone. That and rust.
Now people update with the bigger 4wheel discs from the mini van. It's called the SLH upgrade, to go with Goes Like Hell.
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Old 01-17-2012, 08:33 AM
 
 
 
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