Brake Issues on 1990 Cherokee -
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post #1 of 5 Old 04-06-2013, 01:16 PM Thread Starter
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1990 XJ Cherokee 
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Location: Bella Vista
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Brake Issues on 1990 Cherokee

So I just got done bleeding my brakes and there was no change in my braking. I still have to put the pedal all the way to the floor and even then I'm hardly braking. The pads are not that old only like 4 months or so. When I press the pedal I can hear hissing from it. I haven't had to add fluid so its not leaking out. If anyone has any thoughts of what might be going on, I would love to hear them.

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post #2 of 5 Old 04-06-2013, 01:34 PM
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1998 ZJ 
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First things first, do you have on XJ, or a full size like you claim on your info (and btw., the 4.0 is not a V6..)? Second, ABS or standard brakes?

If you have standard brakes and the pedal goes all the way to to floor, you most likely have a bad master cylinder. Booster may hiss a little during braking, but if it's bad you'd have a very hard brake pedal. Air in the system and you've got a spongy feel on the pedal, bad MC makes the pedal go slowly all the way to the floor (and you have reduced or no braking power).

1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...

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post #3 of 5 Old 04-06-2013, 01:48 PM Thread Starter
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1990 XJ Cherokee 
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Location: Bella Vista
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its four door so yeah full size, and standard. The brakes feel spongy but i just bled them and they're still spongy
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post #4 of 5 Old 04-06-2013, 02:31 PM
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1988 XJ Cherokee 
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NO no a FSJ, and XJ are two different types of jeeps. Google it for clarification. They did not make a FSJ Cherokee in 90, but did make a FSJ Wagoneer in 90. Did you bleed them through the line fitting or bleed screw?
Edit---You hear air, then it may be a bad Master Cylinder.

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post #5 of 5 Old 04-07-2013, 08:00 PM Thread Starter
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1990 XJ Cherokee 
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Location: Bella Vista
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sorry misunderstood, i have a XJ. Bleed them through the bleed screw. Im thinking the Cylinders bad
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