Go Back   Jeep Garage - Jeep Forum > Jeep Technical Discussion > Troubleshooting/Problems Discussion

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 07-28-2013, 02:36 AM
Member
My Jeep: 2002 4.7L WJ
 
Join Date: May 2012
Location: South Australia
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1004
jeepv8 is on a distinguished road
Unhappy Front diff/ WJ 2002

Hi guys , need some help to work out a whining sound which starts around 35mph through to 60mph, underload or heavy on the gas sounds worse back off to coast all is quiet, 40,000 miles new wheel bearings {hubs} oil level fine and jeeps traveled 125,000mile. Any ideas would be great on where to start,
__________________

__________________
Reply With Quote
  #2  
Old 07-28-2013, 05:32 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,291
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526335
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Front diff/ WJ 2002

Could be a bearing inside the diff housing. Did you check the fluid for metal glinsters,which could point towards a bearing problem. Could be pinion and ring, but could eventually be. a bad CV joint. Did you check the CV joint boots?
__________________

__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #3  
Old 07-28-2013, 09:27 PM
Member
My Jeep: 2002 4.7L WJ
 
Join Date: May 2012
Location: South Australia
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1004
jeepv8 is on a distinguished road
Re: Front diff/ WJ 2002

Hi Frank thanks for your help again, i had the new cv s fitted about 31,000 miles ago, do you know what amount of oil is needed ? , regards peter
__________________
Reply With Quote
  #4  
Old 07-28-2013, 09:57 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,291
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526335
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Front diff/ WJ 2002

Hi Peter, the front diff (Dana 30) takes 1.18 L (2.5 pts) of 75W-140. (according the manual) On my diffs however its written to use 80W-90.
If your jeep is Quadra drive, it would require also 2.5 oz of friction modifier and the 75W-140.
If you do the rear diff at the same time, it requires 1.66 L (3.5 pts) for the Dana 35 or 2.24 L (4.75 pts) for the Dana 44.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #5  
Old 07-28-2013, 10:23 PM
Member
My Jeep: 2002 4.7L WJ
 
Join Date: May 2012
Location: South Australia
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1004
jeepv8 is on a distinguished road
Re: Front diff/ WJ 2002

Hi Frank the oil i used was 80/140 penrite which going by oil charts it was compatable so thay say, is there any other checks i could do to pin point the other ussues it maybe , regards peter ps the modifier is a additive that goes in with a oil change which i havnt done yet.
__________________
Reply With Quote
  #6  
Old 07-29-2013, 12:15 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,291
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526335
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Front diff/ WJ 2002

If you are going to open the diff, have a look at the fluid first. Check with a bright flashlight if there is any fine metal shavings in the fluid and/or at the bottom of the diff housing. Then look at the pinion and ring gear for damage and wear.
But most of the time a whining noise is coming from a bearing.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #7  
Old 07-30-2013, 06:44 AM
Member
My Jeep: 2002 4.7L WJ
 
Join Date: May 2012
Location: South Australia
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1004
jeepv8 is on a distinguished road
Re: Front diff/ WJ 2002

Cheers Frank, maybe be pinion bearing ? or do you think there is another culprit , with any luck it wont be to nasty, regards peter
__________________
Reply With Quote
  #8  
Old 07-30-2013, 12:06 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,291
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526335
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Front diff/ WJ 2002

A pinion bearing in general gives a high pitched whine and a differential bearing a low pitched whine. But when there is any metal in the fluid, all bearings should be changed, because the metal most probably has caused minor damage to the other bearings and will cause them to wear more rapidly and then you have to open it up again.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #9  
Old 08-07-2013, 09:49 AM
Member
My Jeep: 2002 4.7L WJ
 
Join Date: May 2012
Location: South Australia
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1004
jeepv8 is on a distinguished road
Re: Front diff/ WJ 2002

Cheers for the help Frank, yes mine is low pitch whine so doesnt sound good , then to top it off broke a rear exh manifold bolt off on my passenger side your drivers side , do you know if i can buy them in a kit from the states ? i have been looking but unable to find the right size , regards pete
__________________

__________________
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
Noise in front diff hammerhead3230 Troubleshooting/Problems Discussion 2 05-09-2013 02:00 PM
T case and front diff. hoffmanestates Troubleshooting/Problems 4 10-07-2012 07:08 AM
Front diff ratio Tanner505 Troubleshooting/Problems 5 05-31-2012 11:13 PM
Front diff noise Tanner505 Troubleshooting/Problems 4 05-31-2012 10:04 PM
Front Diff nick.turton@talk21.com Grand Cherokee - WK 1 09-16-2010 02:29 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:56 PM.


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

JeepGarage.org is in no way associated with or endorsed by Chrysler Group LLC.