Welcome to the Jeepn.
Results 1 to 4 of 4
  1. #1
    Junior Member
    Join Date
    Jul 2011
    Posts
    7

    Progressive Coupler Going Bad

    So with tight turns I'm getting some very unpleasant grinding sounds and the 2002 WJ Overland shutters. It's been getting progressively worse (no pun intended) over the last couple of months. When I searched I saw quite a bit of conflicting information like:

    - Progressive couple definitely is the problem
    - Progressive couplers don't go bad
    - Problem is with front & rear diff's
    - Wrong TC fluid
    - Must have friction modifier in difs
    - Don't need friction modifier in difs with synthetics

    So here's the deal with mine:
    - Fluids in diffs are less than 1 year old, synthetic & friction modifies
    - Fluid in TC is the correct Mopar stuff (less than 1 year old)
    - Binding is without question coming from the TC
    - Smooth and quite in a straight line.

    Does anyone have any thoughts? Progressive coupler shot or not? If so, how hard is it to replace (I installed the SYE on my YJ so I have been in a TC before)? Best sources to purchase a PC if needed? If it's not the PC then what?

  2. #2
    Junior Member
    Join Date
    Jul 2011
    Posts
    8
    Binding is without question coming from the TC?
    First off, what makes you so certain of that? With the correct fluid that won't be the problem. If the pc is failing, then it won't cause the binding either, just won't transfer power. Its not like the Viscous Coupler that locks up when it fails.
    I had the problem in the past but changing the fluids took care of it, but it was time for changing them. You say yours are good.
    Maybe its an axle cv but I don't know if they act that way like a bad u-joint can.

  3. #3
    Junior Member
    Join Date
    Jul 2011
    Posts
    8
    Quote Originally Posted by Steve3234 View Post
    Binding is without question coming from the TC?
    First off, what makes you so certain of that? With the correct fluid that won't be the problem. If the pc is failing, then it won't cause the binding either, just won't transfer power. Its not like the Viscous Coupler that locks up when it fails.
    I had the problem in the past but changing the fluids took care of it, but it was time for changing them. You say yours are good.
    Maybe its an axle cv but I don't know if they act that way like a bad u-joint can.
    you are right about a failing progressive coupler not causing chatter or binding. If the binding is in the TC, changing the fluid again using the Mopar NV247 lube should help.

  4. #4
    Junior Member
    Join Date
    Jul 2011
    Posts
    7
    PCs fail to 2wd only.
    Look to your varilocks instead.


 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Logout