NO Brakes in 4LOW - Page 2 - JeepForum.com

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post #16 of 41 Old 05-12-2013, 05:53 PM
Reno72
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If you're feeling good about no air in the lines, seems the next step would be master cylinder. Are you still running stock lines? I know you're turning some big meats, if you're running old lines might be good to change them, but unless their bulging, leaking or crimped they should not cause this.

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post #17 of 41 Old 05-12-2013, 08:13 PM Thread Starter
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Originally Posted by Reno72 View Post
If you're feeling good about no air in the lines, seems the next step would be master cylinder. Are you still running stock lines? I know you're turning some big meats, if you're running old lines might be good to change them, but unless their bulging, leaking or crimped they should not cause this.
I'm sure there is no air in the lines. I'm running stock hard lines but I'm running long stainless braided lines front and rear. No leaks no bulging. I haven't lost any fluid either.

I guess im gonna buy a master cylinder this week.

"Life is hard, it's harder if your're stupid"...The Duke
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post #18 of 41 Old 05-13-2013, 10:12 AM
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Here is my brutally honest assessment of this situation...

You had gears put in your jeep. The guy was probably lazy and didn't even unhook your calipers but instead just unhooked the brakes and figured he'd bleed them afterwards. Or he didn't even bleed them at all. Or he crimped a line or didn't get the connection between the rear brake line "right".

Either way your entire braking system has been compromised by something seemingly small but might be hard to diagnose.

You're on track to start something that you're probably not qualified to do (brake overhaul/master cylinder replacement) and you probably don't have the tools to do (have brake line flaring tool?).

My gut feeling is that you have air in your lines and need to go buy $15 (two quarts) of brake fluid and just cycle it through. If that doesn't solve your problem you need to mash on your brakes on some clean pavement for a couple minutes so you can find the leak. Act like Dr. House on this one...coincidences don't happen.
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post #19 of 41 Old 05-13-2013, 11:27 AM
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Sounds like the rear shoes need adjusting... in 4 low I don't care how good your front pads are they won't hold all 4 tires alone and the rear tires keep pushing unrestricted over powering the front brakes

The gear change just increased an existing problem you hadn't noticed... since I assume you went to lower gears now the extra leverage makes it really stand out
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post #20 of 41 Old 05-13-2013, 01:47 PM
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Act like Dr. House on this one...coincidences don't happen.
I'd have to agree. I also agree with others who have indicated that you take it back to the guy who did your gears. If everything was working before you took it in and now it's not, it's their problem, not yours.

Personally, I wouldn't touch it. As soon as you touch it, you bought it!

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post #21 of 41 Old 05-13-2013, 02:08 PM
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Personally, I wouldn't touch it. As soon as you touch it, you bought it!
This. A reputable shop would take a look at the issue and fix it if it was cased by their mechanic. If it stopped fine before, they need to fix it.

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post #22 of 41 Old 05-13-2013, 02:33 PM
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What was the gear change from/to?
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post #23 of 41 Old 05-13-2013, 04:50 PM Thread Starter
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What was the gear change from/to?
4.56 to 5.38

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post #24 of 41 Old 05-13-2013, 04:56 PM Thread Starter
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This. A reputable shop would take a look at the issue and fix it if it was cased by their mechanic. If it stopped fine before, they need to fix it.
that's the problem. i've dealt with these guys before and have never had a problem with them. I brought this to their attention before I pulled off the lot. They claim that they did nothing to the breaks nor disconnect any brake lines. I thought they were a reputable shop but when I left that day a sure felt SCREWED.

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post #25 of 41 Old 05-13-2013, 04:57 PM Thread Starter
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Sounds like the rear shoes need adjusting... in 4 low I don't care how good your front pads are they won't hold all 4 tires alone and the rear tires keep pushing unrestricted over powering the front brakes

The gear change just increased an existing problem you hadn't noticed... since I assume you went to lower gears now the extra leverage makes it really stand out
I'm going to give that a try. I've only messed with the front so far.

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post #26 of 41 Old 05-13-2013, 05:08 PM Thread Starter
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Originally Posted by soonermatt View Post


You're on track to start something that you're probably not qualified to do (brake overhaul/master cylinder replacement) and you probably don't have the tools to do (have brake line flaring tool?).
Ignorant assessment

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post #27 of 41 Old 05-13-2013, 05:24 PM
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I'm going to give that a try. I've only messed with the front so far.
I am only going with that suggestion because its the exact same issue I am fixing on my wife's 90 for a mud ride memorial weekend

New fronts but the rears don't hold at all right now
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post #28 of 41 Old 05-13-2013, 07:08 PM
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Ignorant assessment
I apologize. You said you knew the lines were bled because your lines werent bulging or leaking. This made me think you had no idea you knew what you're talking about because they aren't symptoms of air in brake lines -- your problems are.

I guess I stand corrected. Replace your already newer, oversized 95 master cylinder and let us know how it goes.

FWIW: your better master cylinder and booster will mask air in the lines better than your original 88.

Sorry for offending you with my ignorant statement.

Edit: I just considered how I feel when *******es comment on my build thread. Although sometimes they're right, I don't like hearing it. I really believe a fluid flush is worth trying. I need to be more respectful. Sorry.
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post #29 of 41 Old 05-13-2013, 07:49 PM Thread Starter
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I apologize.
No worries.

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Originally Posted by soonermatt View Post
Replace your already newer, oversized 95 master cylinder and let us know how it goes.

This is what I'm going to do

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post #30 of 41 Old 05-31-2013, 05:54 PM Thread Starter
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Found the problem...Its a leaking master cylinder. I was told to use an E350 master cylinder. Is this a good fix? if so what year do I need to use?

"Life is hard, it's harder if your're stupid"...The Duke
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