Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 05-13-2012, 11:51 AM
Member
 
Join Date: Dec 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1757
mmain is on a distinguished road
Front differential - a possible vibration source?

I have a persistent problem with vibration on my 2005 GC 5.7 Limited, which occurs in the 40 55 mph range, albeit intermittently, although it does seem more likely to occur when you push down the gas pedal and / or climbing upwards. So far I have rebalanced all the wheels, replaced the torque converter and even replaced the ECM on the possibility that it might be a problem with the torque converter clutch modulated signal, which clearly is not the case. I am now looking for some further advice and wondering whether the front differential, prop shaft, transfer case and associated mounting components are likely causes, particularly when the problem is intermittent and worst over a specific range of speeds. I should point out that I have never had any EVIC error codes. Any advice welcome.
__________________

__________________
Reply With Quote
  #2  
Old 05-24-2012, 09:14 AM
Member
 
Join Date: Dec 2011
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1018
ThR1LLr is on a distinguished road
Re: Front differential - a possible vibration source?

Check your CV Joints? Replace fluid with new synthetic and modifier?
__________________

__________________
Reply With Quote
  #3  
Old 05-24-2012, 10:12 AM
Member
My Jeep: 2005 5.7L WK
 
Join Date: Jul 2010
Location: Kingston, Ontario
Posts: 801
Thanks: 0
Thanked 15 Times in 14 Posts
Rep Power: 276897
dr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond repute
Re: Front differential - a possible vibration source?

Quote:
Originally Posted by mmain View Post
I have a persistent problem with vibration on my 2005 GC 5.7 Limited, which occurs in the 40 – 55 mph range, albeit intermittently, although it does seem more likely to occur when you push down the gas pedal and / or climbing upwards. So far I have rebalanced all the wheels, replaced the torque converter and even replaced the ECM on the possibility that it might be a problem with the torque converter clutch modulated signal, which clearly is not the case. I am now looking for some further advice and wondering whether the front differential, prop shaft, transfer case and associated mounting components are likely causes, particularly when the problem is intermittent and worst over a specific range of speeds. I should point out that I have never had any EVIC error codes. Any advice welcome.
Depending on where you had your wheels balanced, this may still be the issue. Apparently there are good machines, and ones that don't do as good a job. I have had a set of wheels balanced at one shop, they still had a bit of a vibration at highway speeds, took them to another (that had a hunter something or other balancing machine that they were quite proud of) that was able to get things taken care of.

Other than that, I would likely start with the u-joints on the prop shafts. They could certainly cause a vibration within a certain speed range and are relatively easy to check. If you crawl under you can visually inspect, and check for excessive play in the joints by applying some force to it. You could also detach the joint, and move the end around feeling for stiff spots. The rear is a little more common to go than the front, but checking both wouldn't hurt.

I wouldn't suspect it is the diff itself, as they will usually howl/whine/growl etc., before they would cause a vibration. The diff mounts, on the other hand, are certainly a known area that wears out. I don't know if it would cause a vibration like you describe, typically it causes the vehicle to clunk into drive from park and reverse.

Wheel bearings also usually give an audible warning before they would cause significant vibration, but you can check for excessive play by lifting up the vehicle one side at a time, grabbing the wheel at 6 and 12 and giving it a good shake. Repeat with your hands at 3 and 9. If you feel play in the wheel, the bearings are a likely source.

As for the transfer case, there isn't too much that you can do other than check fluid quantity and quality. I wouldn't list this high in probability with your symptoms, but anything is possible!

I am by no means an expert, and there are many, many possible causes for a vibration like you describe (as anyone who has experienced the death wobble in an older jeep can attest to!), but that is where I would start with things.

Though I like to handle most things with my Jeep myself, sometimes it is easier just to take it to a good shop to at least diagnose what the problem can be...sometimes being able to get all 4 off the floor can help immensely!

Good luck!
__________________
Reply With Quote
  #4  
Old 02-26-2013, 10:23 PM
New Member
My Jeep: 2005 5.7L WK
 
Join Date: Apr 2012
Location: Mesa AZ
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
chris203 is on a distinguished road
Re: Front differential - a possible vibration source?

I know this is an old thread, but did OP resolve the issue? My 05 Hemi WK is also having this vibration from about 40-55. It started after a day of romping it pretty hard in the sand dunes. Replaced the transfer case fluid so far and no luck. CVs or U-joints sound like possible culprits.
__________________
Reply With Quote
Reply

Thread Tools
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
IMPORTANT: Changing front differential oil RedRocker Troubleshooting/Problems 16 03-13-2012 03:03 PM
Front Differential Mount Bushings Need to be Replaced Chaoul1 Troubleshooting/Problems Discussion 4 08-28-2011 01:03 AM
Front differential driver seal? AcidCold Grand Cherokee - WK 2 09-16-2010 08:57 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 05:12 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community