Brake Petal Whine -
LinkBack Thread Tools
post #1 of 3 Old 08-05-2011, 12:05 PM Thread Starter
Registered User
2004 TJ Wrangler 
Join Date: Jun 2008
Location: Richardson
Posts: 321
Brake Petal Whine

I've noticed recently, that after a complete stop the brakes make a high pitch whine while I switch from brake to clutch. The noise relates directly to the up travel of the petal. Is this a sign that my master cylinder is going out? Booster? I checked the reservoirs and the fluid is a little yellow, but its still full. Ideas?

Hawk37 is offline  
Sponsored Links
post #2 of 3 Old 08-05-2011, 03:01 PM
Mean Max
Don't poke the bear
Mean Max's Avatar
1991 YJ Wrangler 
Join Date: Jul 2007
Location: Stuart, Florida
Posts: 13,734
Sounds like a bad booster. Squeeze the large vacuum line going into the booster with something to clamp it off & attempt to repeat the same scenario again. If there isn't any noise with the vacuum line clamped off, it's a bad booster.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
Mean Max is offline  
post #3 of 3 Old 08-08-2011, 10:53 AM Thread Starter
Registered User
2004 TJ Wrangler 
Join Date: Jun 2008
Location: Richardson
Posts: 321
I'll give that a try. Thanks
Hawk37 is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
No cluch petal fran87yj YJ Wrangler Technical Forum 3 02-04-2010 11:07 PM
electronic cylinder on clutch petal? fiberguy30 TJ Wrangler Technical Forum 1 03-01-2008 10:33 PM
Too much skinny petal kankan YJ Wrangler Technical Forum 6 07-02-2007 02:32 AM
Whine mcastie89 TJ Wrangler Technical Forum 1 09-20-2005 11:52 AM
Clutch petal on 97 TJ. Plastic clip??? 97TJ2.5 TJ Wrangler Technical Forum 5 02-05-2003 03:19 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome