*Cold* Auto Transmission Slipping - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > JK Wrangler Technical Forum > *Cold* Auto Transmission Slipping

BDS 4-1/2" Suspension Lift Kit - Jeep Wrangler YJRough Country Lift Kits and Parts!FREE, FREE, FREE EVENT!! Save big on Lockers now till Apri

Unread 11-12-2013, 08:00 AM   #1
Registered User
2007 JK Wrangler 
Join Date: Mar 2009
Location: Erie, PA
Posts: 290
*Cold* Auto Transmission Slipping

We just had our first snow, so first days of cold, under 35-40 degrees.

We just got my wife an 07 JK Unlimited X a month ago

Yesterday she reported the Jeep engine reving up but just barely crawling forward, enough that she didnt feel good pulling out into traffic. Once the temp gauge went to warm on the dash, no more slipping. I took it out this morning and it did it for me as well. Jeep would rev, jeep would sit or drift, until it felt like the clutch grabbed and hooked up.

AUTO transmission "slipping" when cold...is this a known problem? ...anyone have any ideas? We are still within our 3 month war. from the used dealer for the powertrain. ...any suggestions?

Thanks guys

JrJmisn is offline   Reply With Quote Quick reply to this message
Unread 11-12-2013, 08:59 AM   #2
Web Wheeler
ronjenx's Avatar
2008 JK Wrangler 
Join Date: Jan 2009
Location: Maine
Posts: 4,468
Sounds like low fluid level.
Have you checked it after the trans is warmed up, with the engine idling in park or neutral?
ronjenx is offline   Reply With Quote Quick reply to this message
Unread 11-12-2013, 07:52 PM   #3
Registered User
2013 JK Wrangler 
Join Date: Sep 2013
Location: barre, vt
Posts: 34
Mopar transmissions used to suffer from what we called drain back . Over night the fluid would drain out of the torque converter and back into the pan . In the morning the transmission would seen to slip until the torque converter filled with fluid . A few minutes after parking your Jeep and shutting off the engine , pull the trans dipstick and check the fluid level . The next morning , prior to starting the Jeep , check the fluid level again . Is the fluid level the same as last night ? If the fluid level is higher it could be converter drain back . Let the Jeep run for while before trying to move it , letting the torque converter refill . Sometimes a transmission flush will help converter drain back .
JBADV is offline   Reply With Quote Quick reply to this message

auto , cold , jk , slipping , transmission

Quick Reply

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:
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.

Thread Tools

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.