Brake Pedal is stuck upward - JeepForum.com
 
LinkBack Thread Tools
post #1 of 7 Old 10-16-2014, 02:57 PM Thread Starter
KP-J33PIN
Registered User
2002 TJ Wrangler 
 
Join Date: Jun 2011
Location: Coventry
Posts: 23
Brake Pedal is stuck upward

Started the jeep this morning and noticed a pop and vibration happening afterward. Turned the jeep off let it rest for a min then fired back up and the vibration was gone hasn't come back since.
Noticed though the brake Pedal is stuck upward can only push it down about a 1/4 of the way with minimal braking power being supplied when moving. Brakes aren't constricting movement when rolling in neutral. Even when jeeps parked and off the brake pedal is stiff as a board. Wondering if anyone has had this issue, i think it might be the master Cylinder or Brake Booster. Or maybe the lines just need rebleeding Any feedback could really help me narrow down this problem.


-KP
" Why are you so sweaty?!?!"
" I was watching cops"
KP-J33PIN is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 10-16-2014, 03:31 PM
Jeepsr4me
Registered User
 
Join Date: Dec 2004
Posts: 9,367
Check the hose to the booster.
Jeepsr4me is offline  
post #3 of 7 Old 10-16-2014, 03:56 PM Thread Starter
KP-J33PIN
Registered User
2002 TJ Wrangler 
 
Join Date: Jun 2011
Location: Coventry
Posts: 23
Already have, no cracks in the hose. Checked the checkvalve also
KP-J33PIN is offline  
 
post #4 of 7 Old 10-16-2014, 04:04 PM
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley
Posts: 31,667
Quote:
Originally Posted by KP-J33PIN View Post
Already have, no cracks in the hose. Checked the checkvalve also
Is the booster holding vacuum?

I am Savvy
blackmagicbrakes.com
Knowledge does not equal understanding.
mrblaine is offline  
post #5 of 7 Old 10-16-2014, 04:24 PM Thread Starter
KP-J33PIN
Registered User
2002 TJ Wrangler 
 
Join Date: Jun 2011
Location: Coventry
Posts: 23
The booster seemed to have pressure because when we loosened a line off the proportioning valve with foot on pedal it would decrease to the floor. Tighten the valve and fire the jeep back up and the brake pedal was back to the top and stiff as a board
KP-J33PIN is offline  
post #6 of 7 Old 10-16-2014, 04:33 PM
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley
Posts: 31,667
Quote:
Originally Posted by KP-J33PIN View Post
The booster seemed to have pressure because when we loosened a line off the proportioning valve with foot on pedal it would decrease to the floor. Tighten the valve and fire the jeep back up and the brake pedal was back to the top and stiff as a board
No, booster does not have pressure. It is purely a vacuum assist device.

Opening a line removes the need for assist because it is just a big leak at that point with no need for the assist from the booster.

Check the booster and see if it is holding vacuum.

I am Savvy
blackmagicbrakes.com
Knowledge does not equal understanding.
mrblaine is offline  
post #7 of 7 Old 10-16-2014, 04:56 PM Thread Starter
KP-J33PIN
Registered User
2002 TJ Wrangler 
 
Join Date: Jun 2011
Location: Coventry
Posts: 23
would hand over check valve indicate pressure?

Last edited by KP-J33PIN; 10-19-2014 at 05:14 AM.
KP-J33PIN is offline  
Reply

Quick Reply
Message:
Options

Register Now



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

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

Password:


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



Email Address:
OR

Log-in









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



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