JeepForum.com - Reply to Topic
Thread: Transmission\TC Issue? Reply to Thread
Title:
Message:

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










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
11-12-2018 05:15 PM
rjbruzan Quite a good chance its differential bearings. The noise increases with speed. Any glitter or glint when you changed the diff fluid? Possibly louder on deceleration.
Loose chain is also another possibility too. Are you capable of rebuilding one? The parts are not to expensive, more a lot of labor.
Unless its grinding or clunking most likely just age noise.
Its hard not to get paranoid at some sounds but there are many out the with way over 300K on the clock. I would be very surprised if they were quiet.
Thin floor insulation does not help either.

Ron
11-12-2018 10:35 AM
remdev
Transmission\TC Issue?

All,
I have a 97 Jeep Cherokee (XJ) 4.0L with 242K miles on it and it has a noise that I canít pinpoint. Before throwing time or money away, I thought Iíd check the forum for insight or advice. All thoughts welcome.

TC: NP231J
Transmission: AW4

The sound seems to come from the front of the trans hump or back of the engine compartment.
In Park at 2K rpm no noise and engine sounds good
Put in Neutral while moving no change in sound
No shifting issues when driving on the road
Putting in 4WD no issues
The noise is not present when moving and becomes really noticeable at 30 mph and above
Sounds like gearing rattle or rough bearing to me. Could be a dragging (like a stretched TC chain rubbing the housing) sound but tough to tell.
With the jeep on stands and indicating 40 mph (wife at the wheel), I was not able to pinpoint the noise (engine, trans, TC) using a section of garden hose. Nope Ė didnít get under it. I was already spooked enough. However, the noise could be clearly heard when sitting in the Jeep
Just did the brakes and no wobble in the wheels
No extra noise going around turns so probably not a wheel bearing
Front ujoints are fairly new
Fluids are good

Thanks

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

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