2012 Liberty Jerking Issue - JeepForum.com
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post #1 of 4 Old 05-25-2013, 09:25 PM Thread Starter
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2012 KK Liberty 
Join Date: May 2013
Location: bossier city
Posts: 1
2012 Liberty Jerking Issue

Sorry if this has already been talked about before. I did a quick search and couldn't find anything. I just bought a used 2012 Jeep Liberty Sport, Has 30K miles on it.

What its doing is when I'm driving say 60mph and the RPMs are at 1500. The jeep will have a small jerk to it. Its very small but very annoying.

I took it to the dealership and he said its something to do with the programing for something called full/patial lock up ? Any thoughts....

Last edited by RyanZ; 05-25-2013 at 09:37 PM.
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post #2 of 4 Old 05-25-2013, 09:37 PM
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1991 YJ Wrangler 
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Maybe the Torque Converter Clutch locking and unlocking due to a break in program?

91 YJ Sahara, 4.0L, AX-15/NP231, D30/D35@3.07
12 Cherokee 4x4,3.7L,42RLE/MP1522, D30M/8.25@3.73
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post #3 of 4 Old 05-26-2013, 12:20 AM
2011 KK Liberty 
Join Date: Nov 2012
Location: Finger Lakes
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Normal. The 42RLE transmission is pretty . . . . unrefined . . . lets use that word.

I've driven a 2006 and a 2011 both with the 42RLE, and they shift hard between first and second, and often times between other gears too. It's a Jeep.
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post #4 of 4 Old 05-26-2013, 03:28 PM
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2008 KK Liberty 
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Nature of the beast, unless you need to change your spark plugs.
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