Strange noise in Differential - Diesel Truck Forum -
Thread Details Posted by norsk, this thread has received 1 replies and been viewed 922 times.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 06-15-2009, 07:04 PM Thread Starter
Join Date: Jun 2009
Posts: 6
Points: 658
Thanks: 0
Thanked 0 Times in 0 Posts
Strange noise in Differential


I would like some help diaognosing a strange noise I am hearing occasionally from I beleive the rear Diff.Of a 1991 Chev Suburban 2500 Diesel.

The noise sounds like a fast Sewing Machine,or like you are dragging a "ratchet strap",this is accompanied by on or two "thump's" (like the rear differential is locking) then its all back to normal.

I changed the rear diff fluid and filled it incorrectly with a normal 80 W90,I changed to 80W 90,half a gallon about, that was for limited slip diffs but the noise still occurs sporadically.Whilst this noise is happening I have shifted the transmission into neautral and the sound still occurs with the same pitch.

Recently I changed the wheel bearings,perhaps I upset the "Sipders" in the diff?I took the rear diff cover off and jacked up the Axels,ran the Truck with its wheels off the ground.As luck would have it ,the noise didn't happen for the experiment.

However with my foot I was able to slow one turning wheel,untill the diff would lock,however the wheel would spin free again.Ie the diff lock would disengage.

I have videoed the above and am waiting for it to upload.

Any help is much appreciated.

norsk is offline  
Sponsored Links
post #2 of 2 (permalink) Old 06-15-2009, 07:43 PM Thread Starter
Join Date: Jun 2009
Posts: 6
Points: 658
Thanks: 0
Thanked 0 Times in 0 Posts
Here is the video

norsk is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck Forum - 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 email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
rear differential ? bmxdirtjumper13 1994-2003 7.3L Power Stroke 21 04-18-2009 02:01 PM
Strange Noise Green Machine 2003-2007 6.0L Power Stroke 6 02-12-2009 06:20 AM
Turbo going??? Strange noise bakantor 2003-2007 6.0L Power Stroke 14 06-19-2007 07:02 PM
Steering making a strange noise? BIGHILLBILLY 2003-2007 6.0L Power Stroke 2 10-24-2006 02:22 PM
strange injector noise DSI 2003-2007 6.0L Power Stroke 2 06-18-2006 01:56 AM

Posting Rules  
You may not post new threads
You may not 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 On
Pingbacks are On
Refbacks are On

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