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Old 08-18-2010, 07:17 AM   #1
Join Date: Aug 2010
Location: Muscat, Oman
Posts: 29
Brake Booster Leak

Hi Folks,

I have only had the YJ for a few weeks and was surprised at how bad the brakes were but a read of the web suggested they may be normal for a Jeep!

Yesterday however, I had the AC off and when I braked I could hear a hiss. Today I sucked on the brake booster suction pipe and my wife pressed the brake pedal. To start the booster held vacuum but as soon as the pedal was pressed the vacuum leaked away.

I presume this is not normal and I have a leaky brake booster?


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Old 08-18-2010, 09:24 AM   #2
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Join Date: May 2010
Location: pinole ca.
Posts: 680
probably bad. you can swap a gm booster to get a little better braking. should be able to find something on internet as to which ones swap.

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Old 08-19-2010, 07:10 AM   #3
Join Date: Jul 2010
Location: Pennsylvania
Posts: 16
Originally Posted by NeilB View Post
I presume this is not normal and I have a leaky brake booster? help for it but to replace it. New ones are @ $130. Looking at your location, a used or salvage yard part would not be likely.....
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Old 08-19-2010, 07:32 AM   #4

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not sure what year ya have but rockauto has then for avg of 60 bucks for just the booster, if ya need the master then its 130ish...
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Old 08-20-2010, 11:40 AM   #5
Join Date: Aug 2010
Location: Muscat, Oman
Posts: 29
Thanks folks, that's much as I expected.

Fortunately I have bought from Rock Auto before and ship via Aramex so it should not be a problem getting a new booster.

The YJ is a 94 but I believe a 95's booster is a dual diaphram, gives extra braking power and is a direct swap. If this is the case I will probably order one of those.

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