High Pitched Noise Driving Me Crazy - JeepForum.com

 
LinkBack Thread Tools
post #1 of 10 Old 03-24-2011, 02:42 PM Thread Starter
RedDragon1
Registered User
 
Join Date: Mar 2011
Location: Lorton
Posts: 2
High Pitched Noise Driving Me Crazy

I have a 2002 Jeep Grand Cherokee (4x4). There is a high pitched noise that is coming from someplace in the engine in front of the driver area. It almost sounds like a high pitched sound like when you have an ungrounded radio...but its not it. It does not happen all the time, but when it happens, it is when I start to drive above 40 mph. If I press on the accelerator, it will lower pitch. If I let off it, the pitch increases. It does not happen if I put the vehicle in neutral. Of course I can never reproduce it for my mechanic and he has no idea. Please help, it drives my sensitive ears crazy!
Thanks.

RedDragon1 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 03-24-2011, 04:28 PM
94yj03wj
Registered User
2003 WJ 
 
Join Date: Nov 2010
Location: new milford
Posts: 148
I'm not sure if I have the same issue but with my grand cherokee if I'm in 3rd gear doing about 40mph and the torque converter locks up I get the same noise you are describing and it changes with my throttle position. Same thing in 4th gear around 55-60 mph when the converter is locked up. I know this doesn't answer your question but if it is the same problem I have then it most likely has to do with your torque converter. Hope this gives you somewhere to start looking.

2003 WJ Laredo 4.0 I6 with Selec-Trac, 4” BDS lift with 32” Goodyear wrangler Duratracs, KC Slimlites mounted on Kevin’s Offroad Light Bar, Rusty’s Recovery Hooks and T-Case Skid, Midland CB,(Daily Driver)
1994 YJ With 30” Interco TSLs (Project Jeep)
94yj03wj is offline  
post #3 of 10 Old 03-24-2011, 05:28 PM
AGDubyaJ
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2010
Location: San Luis Obispo, CA
Posts: 1,028
theres been a few threads ill find a link for you. however, ive driven my WJ for 2 years and its made this noise. nothing has broken? why fix it?

does it sound like a stuck pig/ dying goat squealing noise? lol, ill find the thread, one guy said it was a wheel bearing/hub assembly. ive heard it was a pinion bearing issue. i just say, drive on it till it breaks and youll know whats wrong with it!

98 XJ- 4.0L, NP231, AW4, chryco 8.25, 4.5" mid arm 3-link, 285/75 Herc terra tracs on moabs, V8 ZJ tie rod, fabbed bumpers...
AGDubyaJ is offline  
post #4 of 10 Old 03-24-2011, 05:35 PM
AGDubyaJ
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2010
Location: San Luis Obispo, CA
Posts: 1,028
http://www.jeepforum.com/forum/f310/...t-end-1177341/

http://www.jeepforum.com/forum/f310/...-help-1125491/

its a wheel bearing if this sounds like what your getting.

98 XJ- 4.0L, NP231, AW4, chryco 8.25, 4.5" mid arm 3-link, 285/75 Herc terra tracs on moabs, V8 ZJ tie rod, fabbed bumpers...
AGDubyaJ is offline  
post #5 of 10 Old 03-24-2011, 05:42 PM
AGDubyaJ
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2010
Location: San Luis Obispo, CA
Posts: 1,028
heres a video of the noise i think your talking about.

http://s81.photobucket.com/albums/j2...t=MVI_0977.mp4

98 XJ- 4.0L, NP231, AW4, chryco 8.25, 4.5" mid arm 3-link, 285/75 Herc terra tracs on moabs, V8 ZJ tie rod, fabbed bumpers...
AGDubyaJ is offline  
post #6 of 10 Old 03-27-2011, 12:28 PM Thread Starter
RedDragon1
Registered User
 
Join Date: Mar 2011
Location: Lorton
Posts: 2
No, the sound is even higher pitched. Upper frequency. It almost sounds like it is coming from behind the dash but if you roll down the window, you can hear it louder. It must be coming from the engine compartment on the driver's side.
RedDragon1 is offline  
post #7 of 10 Old 03-27-2011, 12:51 PM
AGDubyaJ
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2010
Location: San Luis Obispo, CA
Posts: 1,028
take a video of it.

98 XJ- 4.0L, NP231, AW4, chryco 8.25, 4.5" mid arm 3-link, 285/75 Herc terra tracs on moabs, V8 ZJ tie rod, fabbed bumpers...
AGDubyaJ is offline  
post #8 of 10 Old 10-04-2011, 06:54 PM
katch26
Registered User
2000 WJ 
 
Join Date: Oct 2011
Location: Laurel
Posts: 19
Quote:
Originally Posted by AGDubyaJ View Post
heres a video of the noise i think your talking about.

http://s81.photobucket.com/albums/j2...t=MVI_0977.mp4
Thats exactly what mines doing. Is that the wheel bearing?
katch26 is offline  
post #9 of 10 Old 10-06-2011, 01:24 AM
AGDubyaJ
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2010
Location: San Luis Obispo, CA
Posts: 1,028
pinion bearing

98 XJ- 4.0L, NP231, AW4, chryco 8.25, 4.5" mid arm 3-link, 285/75 Herc terra tracs on moabs, V8 ZJ tie rod, fabbed bumpers...
AGDubyaJ is offline  
post #10 of 10 Old 04-02-2014, 02:04 PM
03GcJeEpGiRL
Registered User
2003 WJ 
 
Join Date: Apr 2014
Location: Manahawkin
Posts: 2
Quote:
Originally Posted by AGDubyaJ View Post
pinion bearing
Around how much should that cost to fix?
03GcJeEpGiRL 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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
High Pitched whining noise when i lift off gas 4.0 WJ Perfectbackstag ZJ Grand Cherokee Forum 12 10-29-2013 10:50 AM
High pitched noise from intake jstang289 ZJ Grand Cherokee Forum 17 03-23-2011 03:41 PM
Loud, high pitched noise coming from right front tire Jakey9547 ZJ Grand Cherokee Forum 3 07-13-2009 03:34 PM
High Pitched Squealing Noise MN_ripper ZJ Grand Cherokee Forum 0 06-10-2009 07:23 PM
Squeaking noise driving me crazy!! miker ZJ Grand Cherokee Forum 1 02-15-2004 08:31 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