View Poll Results: How is your Automatic transmission treating you?
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Automatic JK Transmission Problems POLL
JK Newbie
Joined: Jul 2013
Posts: 33
Likes: 0
From: Troy, Ohio
I'm sure this buried in this thread somewhere but here it is again.
2012-2013 Jeep Wrangler Recalled For Transmission Problem
2012-2013 Jeep Wrangler Recalled For Transmission Problem
JK Junkie
Joined: Dec 2008
Posts: 2,191
Likes: 6
From: Boston, MA
That sounds like low ATF. Have you checked the level? (while hot)
JK Newbie
Joined: Oct 2011
Posts: 57
Likes: 0
From: Pittsburgh
Just sold my 11' jku 2.5 in lift for last 24k miles 35's last 18k with 72k miles and tranny still shifted great..nasty shutter in reverse though shook so hard it would make your teeth chatter! Here is to hoping my 14' 2 door auto out performs it's predecessor...
JK Super Freak
Joined: Oct 2012
Posts: 1,225
Likes: 0
From: OCEAN SPRINGS, MS
Sounds like an apply piston or servo is shot. Could also be issues with the valve body being clogged. Even the smallest contaminate that clogs or stops a valve can cause issues. I would get someone who knows their stuff to pull the pan and give the valve body a good once over and go ahead and replace small parts.
JK Newbie
Joined: Nov 2016
Posts: 98
Likes: 3
From: Raleigh, NC
Reviving this old thread as I don't feel it necessary to start a new one. My 2008 JKU with the 42RLE acts up sometimes. I noticed the car lot I purchased it form did a flush and filter change which might be part of it. I tried a couple of methods to reset the transmission via disconnecting the battery and draining all power from the system but it hasn't helped.
It seems common but wondering if there's anything to worry about as most threads just die off. My shifts from 2nd to 1st are often jarring with a loud clunk. It happens mostly while slowly decelerating in city driving. Same thing the other direction if I'm just slowly mall crawling, it'll decide to shift from 1st to 2nd with a loud clunk and you can really feel it hit into the gear. Now if I'm accelerating any more than minimal throttle it shifts nice and smooth, and if I'm braking decently hard it downshifts smoothly as well.
From what I've seen I might as well let it ride, but wondering if anyone had any other advice.
It seems common but wondering if there's anything to worry about as most threads just die off. My shifts from 2nd to 1st are often jarring with a loud clunk. It happens mostly while slowly decelerating in city driving. Same thing the other direction if I'm just slowly mall crawling, it'll decide to shift from 1st to 2nd with a loud clunk and you can really feel it hit into the gear. Now if I'm accelerating any more than minimal throttle it shifts nice and smooth, and if I'm braking decently hard it downshifts smoothly as well.
From what I've seen I might as well let it ride, but wondering if anyone had any other advice.
