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Unread 07-29-2009, 04:53 PM   #1
GrandJoker
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Brake Problem

i have a 93 ZJ and brakes will not grab idk why i think maybe master cyclinder but i dont know can anybody point me in the right direction

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Unread 07-29-2009, 05:04 PM   #2
Bama_WJ
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Hows the pedal feel? Any leaks anywhere? How old are the rotors/pads (or drums/shoes if they are in the rear)?
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Unread 07-29-2009, 05:14 PM   #3
GrandJoker
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The pads and shoes are all new and the rotors just got turned and as long your not moving the pedal is hard but when your moving its goes soft
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Unread 07-29-2009, 05:21 PM   #4
kevo94zj
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check your brake lines for leaks ...
good luck
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Unread 07-29-2009, 05:23 PM   #5
ratmonkey
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have any hissing coming from that area of the dash?
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Unread 07-29-2009, 08:14 PM   #6
GrandJoker
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thats just the thing theres no hissing and there are no leaks
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Unread 07-29-2009, 08:32 PM   #7
SnowLeopard
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I'm having issues along this line as well. I've been told that if it's not the master it might be the proportioning valve. I'm taking it in to be checked next week. I'm not savvy enough with the mechanical stuffs to work on my own brakes. I like living too much.

If this thread's still about, I'll give an update here when I get info from the shop. Hopefully it will be of some help to the OP. It's crazy how the brakes just seem to become soft when everything appears to be in order. I don't understand it.
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Unread 07-29-2009, 08:40 PM   #8
GrandJoker
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yea i know tell me about it but i replace my proportioning valve and it didnt really help much but plz let me know what they says
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Unread 07-29-2009, 08:52 PM   #9
SnowLeopard
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Quote:
Originally Posted by GrandJoker View Post
yea i know tell me about it but i replace my proportioning valve and it didnt really help much but plz let me know what they says
Well, he just tested out the brake pedal while it was in park, so that doesn't help much. He'll have to actually take it out and drive it, then go over all the various bits and pieces to see what's up. He just mentioned it 'could' be the proportioning valve. I've even heard, in another thread on JF, that the brake lines are rubber and can get old so that they expand when you press the brakes, softening the response of the brakes. Who knows in the end? It's like everything else with Jeeps, it's always got 50 possible causes and usually turns out to be the last one you test out. Process of elimination is key.
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Unread 07-29-2009, 08:56 PM   #10
GrandJoker
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yes i know lol there great vehicals but so complicated but i have heard that to but there really aint a way to check it. is there?
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