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Unread 04-06-2013, 01:16 PM   #1
tgoad
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1990 XJ Cherokee 
 
Join Date: Sep 2012
Location: Bella Vista, Ar
Posts: 10
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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Unread 04-06-2013, 01:34 PM   #2
Timo_90xj
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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).
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Unread 04-06-2013, 01:48 PM   #3
tgoad
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1990 XJ Cherokee 
 
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Location: Bella Vista, Ar
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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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Unread 04-06-2013, 02:31 PM   #4
79chiefs
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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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Unread 04-07-2013, 08:00 PM   #5
tgoad
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1990 XJ Cherokee 
 
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Location: Bella Vista, Ar
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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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