Twin cluch automatic transmission in 2010 Liberty? -
LinkBack Thread Tools
post #1 of 5 Old 04-07-2011, 04:17 PM Thread Starter
Registered User
2010 KK Liberty 
Join Date: Nov 2010
Location: Silver Springs
Posts: 58
Twin cluch automatic transmission in 2010 Liberty?

Somewhere I remember reading that the 2010 Liberty 4-speed auto transmission is a twin clutch design. Is this so?

1) I read that a twin clutch is much smoother and faster shifting due to the fact that one clutch handles odd numbered gears (1 & 3) while the other clutch handles even numbered gears (2 & 4). This way the next gear is already engaged before the opposite clutch engages.

2) I read that this reduces MPG somewhat.

3) My 2010 and previous 1997 Grand Cherokee both have 4 speed automatics. The 1997 would shift smoothly to 4th gear and then the torque converter would firmly lock-in. If a slow down in speed required a lower gear to accelerate, I was never sure when the torque converter would unlock or when a shift to the next lower gear would occur. The change might occur long after easy pedal pressure had been applied, resulting in an unexpected RPM increase and a rough gear shift. The 2010 RMP will increase with no feeling of a rough shift of any kind. This results in a marked improvement in smooth shifting especially when resuming speed after a slow down due to traffic or a turn. But, the torque converter lock-up is slow to occur compared to the 1997. It seems to have 2 RPM decreases between 4th gear and final converter lock-up unless I ease my foot off the accelerator. Is this due to the Twin clutch design?

2010 Liberty Renegade
royhkeith is offline  
Sponsored Links
post #2 of 5 Old 04-07-2011, 04:59 PM
Registered User
2002 KJ Liberty 
Join Date: Dec 2009
Location: Colorado
Posts: 8,393
You have the 42RLE auto trans in your '10 KK,just a mordern version of the A604 trans that began in the 1st Chrysler minivans.

'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
tjkj2002 is offline  
post #3 of 5 Old 04-07-2011, 06:58 PM
Registered User
Join Date: Feb 2011
Location: laurel
Posts: 34
I tell you what....If the kk had a six speed I would be very happy.
allskiing is offline  
post #4 of 5 Old 04-07-2011, 10:32 PM
Registered User
2008 KK Liberty 
Join Date: Mar 2011
Location: Highlands Ranch
Posts: 116
I have seen 2008 KK's have 5-speed manuals but I think that is only for international KK's. Shame

2008 Liberty Sport - Chrome Grill, K&N CAI,
BloodyShadow23 is offline  
post #5 of 5 Old 04-07-2011, 10:41 PM
Registered User
2008 KK Liberty 
Join Date: Jun 2008
Location: Arizona
Posts: 1,110
Originally Posted by BloodyShadow23 View Post
I have seen 2008 KK's have 5-speed manuals but I think that is only for international KK's. Shame
Some 08 KK had a 6 speed(manual) here in the U.S.:
2008 Jeep Liberty

The six speed manual and four-speed automatic transmissions continue. The standard 3.7-liter SOHC V-6 engine produces 210 hp (157 kW) @ 5,200 rpm and 235 lb.-ft. (319 Nm) of torque @ 4,000 rpm. Fuel economy (with the standard - and only - V6) was improved by about 2 mpg with either stick or automatic; it is now an estimated 16 city (18 mpg using 2007 EPA standards), and 22 mpg on the highway (23 mpg based on 2007 EPA standards).
richd is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
2010 Liberty transmission cooler. Krieg KK Liberty Forum 7 08-10-2017 04:54 PM
2010 Liberty in the shop... z06boy KK Liberty Forum 5 11-04-2010 10:35 PM
Little help with 2010 Liberty alex725 KK Liberty Forum 16 11-04-2010 10:31 PM
2010 Jeep Liberty with Sun Slider vs. 2010 4dr. Unlimited ?? britt22 KK Liberty Forum 20 10-08-2010 01:49 PM
2010 Liberty "Renegade" with Transmission Vibration davebwi KK Liberty Forum 4 08-09-2010 12:39 PM

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
Trackbacks are Off
Pingbacks are On
Refbacks are On

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