Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Troubleshooting/Problems

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 09-03-2012, 06:13 AM
Member
 
Join Date: Sep 2010
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1481
tiler607 is on a distinguished road
42RE Auto Box

Sad Story i had the Box in my WJ rebuilt 30000 ks ago i now have a whine commencing at 40k ,very loud at 80ks and just audible at 100k more pronounce under acceleration. i thought first it was rear diff which is a d44a open diff so i changed it, removed front shaft to check the d35 but the noise remains. I am just hopping maybe i have missed something and the whine is in the front Diff I should add the noise level is getting worst far more noticeable in O/D I would be gratefull for any observation thanks
__________________

__________________
Reply With Quote
  #2  
Old 09-03-2012, 08:50 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,970
Thanks: 9
Thanked 93 Times in 88 Posts
Rep Power: 525932
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: 42RE Auto Box

Noises can be very difficult to pinpoint. Do you hear a difference in the noise when the tranny shifts? If it would be only depending on the speed, it could be something with the T-case or a front wheel 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
  #3  
Old 09-04-2012, 04:51 AM
Member
 
Join Date: Sep 2010
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1481
tiler607 is on a distinguished road
Re: 42RE Auto Box

Thanks for your reply I looked at some of your posts and noted your suggestion to change the T/C oil which i have done, I put the jeep up on the hoist and ran up to 80ks and the wine was very clear so i would assume that would eliminate wheel bearings noise and front diff noise so i have booked into auto shop for their opinion. Is their any way to increase the strength of a 42 RE any views, I hope your rebiuld is going well regards paul
__________________
Reply With Quote
  #4  
Old 09-04-2012, 06:49 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,970
Thanks: 9
Thanked 93 Times in 88 Posts
Rep Power: 525932
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: 42RE Auto Box

How does the transmission fluid look like? Fluid level is ok?
Does your T-case have the position Neutral? If so, do you still hear the whine when its in N? When the jeep was on the hoist and you ran it, could you hear better where the noise was coming from?
My transmission was rebuild last year and the "specialist" had mounted a clutchpack wrongly. Didnīt make any noises, but the fluid color changed rapidly from the normal red to grey and even black after some time.
I donīt know the 42RE from inside, but i donīt think that you can make it any stronger then it already is. There are several bearings inside the transmission, but i donīt know if they will start making a whining sound. Those bearings are in a closed environment with lots of lubricant around and hardly show any wear. In the rear housing are some large ball bearings, which maybe could be a cause of whining, but first you have to be sure that its really coming from the transmission and not from the T-case. When you changed the T-case fluid, how was the fluid looking? No metal flakes on the magnetic plug?
Attached Files
File Type: pdf 42RE.pdf (135.6 KB, 1 views)
__________________
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
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
42RE Band Adjustment ? Wilco Grand Cherokee - ZJ 0 03-29-2011 08:42 AM
Has anyone ever saved their 42RE tranny? JeepJumper Troubleshooting/Problems Discussion 3 03-26-2011 09:39 PM
42re transmission tiler607 Troubleshooting/Problems 2 12-19-2010 06:31 AM
42re only works for first 5 miles than goes out jeeperdave@comcast.net Engine Performance/Intake/Exhaust 3 10-01-2010 07:49 AM
Auto G/box dipstick tool Dockgreen Troubleshooting/Problems 6 03-30-2010 12:23 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 11:08 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