Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Trouble Shooting/Problems/Service

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #13  
Old 06-09-2014, 04:45 PM
pensfan414's Avatar
Premium Member
 
Join Date: Nov 2013
Posts: 110
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 486
pensfan414 is on a distinguished road
Re: Transmission learning.

Mine seems to have taken 7K miles or so, but now it shifts like a dream. Kinda happened slowly, but all the harsh shifts are gone.


Sent from my iPhone using JeepGarage
__________________

__________________
2000 Cherokee
2014 GC Overland
Reply With Quote
  #14  
Old 06-10-2014, 08:24 AM
AAAA's Avatar
Premium Member
My Jeep: 2015 3.6L WK2
 
Join Date: Jan 2011
Location: Upstate NY
Posts: 2,735
Thanks: 43
Thanked 51 Times in 46 Posts
Rep Power: 1543581
AAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond reputeAAAA has a reputation beyond repute
Re: Transmission learning.

Quote:
Originally Posted by ExcursionDiesel View Post
I wish I did. I drive 30k+ a year in mine. My GC did carry the family to the beach this week. 31.4 mpg on 4 lane roads at 65 to 70 mph.
That's because the run to the beach is downhill from your house!
__________________

__________________
Overland- Nokian WRG3 SUV tires, front and t. c. skid plates, Bosch Icon blades, Husky X-Act Contour slush mats, MOPAR cargo mat, successor to trouble-free 2011 Limited.
(Avatar- http://www.ussslater.org/)
Reply With Quote
  #15  
Old 06-10-2014, 04:40 PM
ExcursionDiesel's Avatar
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Apr 2013
Location: W. TN.
Posts: 1,818
Thanks: 15
Thanked 276 Times in 190 Posts
Rep Power: 3248
ExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond repute
Re: Transmission learning.

Quote:
Originally Posted by AAAA View Post
That's because the run to the beach is downhill from your house!
Fair enough. We'll see how she climbs back up to my lofty home at 340 ft above sea level on the return trip this Thursday.
__________________
----------------------
The founder of JeepGarage.org, Scottina06, has a son Max who is in need of corrective surgery from an infection at birth that left one leg 4 inches short. We need to support our Jeep brothers. His family has started a fund on giveforward.com. If you have ever been helped by someone else, now is a good time to pay it forward. Here is a link to that page. God bless you! http://gfwd.at/1rz33PW
Reply With Quote
  #16  
Old 06-11-2014, 08:02 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 115
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 510
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Re: Transmission learning.

Mine must have learned something it shouldn't have.

1800 miles. Was great for a about a week (ending a few days ago). Now it's downshifting super rough, there is a lag when accelerating then it clunks into gear. Accelerating from middle gears is unresponsive init's current gear and only responds once it's downshifted.

I get the feeling that they tried to put too much technology into this tranny. I just want to be able to step on the gas and have the car move accordingly.

All said, I'm not a fan of this transmission. The Caravan was better.
__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
  #17  
Old 06-11-2014, 11:41 AM
ExcursionDiesel's Avatar
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Apr 2013
Location: W. TN.
Posts: 1,818
Thanks: 15
Thanked 276 Times in 190 Posts
Rep Power: 3248
ExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond repute
Re: Transmission learning.

Quote:
Originally Posted by redddog View Post
Mine must have learned something it shouldn't have.

1800 miles. Was great for a about a week (ending a few days ago). Now it's downshifting super rough, there is a lag when accelerating then it clunks into gear. Accelerating from middle gears is unresponsive init's current gear and only responds once it's downshifted.

I get the feeling that they tried to put too much technology into this tranny. I just want to be able to step on the gas and have the car move accordingly.

All said, I'm not a fan of this transmission. The Caravan was better.
Do yourself a favor and find an open road area and pull the F60 fuse in the fusebox on the passenger side under the hood. Leave it out 30 minutes. Reinstall and do the following:

1. Drive at light to medium throttle (30-40% torque. Let it shift uninterupted through 8th at 50+ mph. Stay under 2k rpm.

2. Throttle off and paddle downshift 8th to 7th, wait til rpm drop below 1200, downshift to 6th and wait to 1200 rpm, repreat all the way to 3rd.

3. Repeat 1 & 2 two more times.

4. Drive conservatively as in step 1 for the next 10 shift cycles or so. After that, resume normal driving behavior.

This effectively does what the TSB outlimes for a service tech to retrain your tranny. Worked great on mine. It will shift funny for a few days here and there as it continues to fine tune.
__________________
----------------------
The founder of JeepGarage.org, Scottina06, has a son Max who is in need of corrective surgery from an infection at birth that left one leg 4 inches short. We need to support our Jeep brothers. His family has started a fund on giveforward.com. If you have ever been helped by someone else, now is a good time to pay it forward. Here is a link to that page. God bless you! http://gfwd.at/1rz33PW
Reply With Quote
  #18  
Old 06-11-2014, 03:35 PM
Member
 
Join Date: Feb 2013
Location: Southeast PA.
Posts: 138
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 772
Dave in Pa is on a distinguished road
Re: Transmission learning.

Quote:
Originally Posted by ExcursionDiesel View Post
Do yourself a favor and find an open road area and pull the F60 fuse in the fusebox on the passenger side under the hood. Leave it out 30 minutes. Reinstall and do the following:

1. Drive at light to medium throttle (30-40% torque. Let it shift uninterupted through 8th at 50+ mph. Stay under 2k rpm.

2. Throttle off and paddle downshift 8th to 7th, wait til rpm drop below 1200, downshift to 6th and wait to 1200 rpm, repreat all the way to 3rd.

3. Repeat 1 & 2 two more times.

4. Drive conservatively as in step 1 for the next 10 shift cycles or so. After that, resume normal driving behavior.

This effectively does what the TSB outlimes for a service tech to retrain your tranny. Worked great on mine. It will shift funny for a few days here and there as it continues to fine tune.


I might try this. In your list on item#1 do you mean stay under 2000 r.p.m. after getting to 50 m.p.h or under 2000 rpm going through the first 8 gears to 50 mph.? Thanks, Dave
__________________
2014 Limited V-6 Tow Pkg 8.4 Cashmere & Light Frost
Reply With Quote
  #19  
Old 06-11-2014, 06:51 PM
ExcursionDiesel's Avatar
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Apr 2013
Location: W. TN.
Posts: 1,818
Thanks: 15
Thanked 276 Times in 190 Posts
Rep Power: 3248
ExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond reputeExcursionDiesel has a reputation beyond repute
Re: Transmission learning.

Stay under 2k rpm throughout the first 12 shift cycles. The manual downshifts are necessary to train certain clutch engagement pressure and timings. If you read the TSB, it is more specific and calls for the shift event counters to be manually incremented via WiTech terminal to eliminate the repetition and time spent driving. We have to drive instead. It appears that the first 12 events are critical although the tranny will continue to adapt gradually afterwards.

This is what I understand from reading the TSB. 21-012-14 found on the w2kjeeps.com website.
__________________
----------------------
The founder of JeepGarage.org, Scottina06, has a son Max who is in need of corrective surgery from an infection at birth that left one leg 4 inches short. We need to support our Jeep brothers. His family has started a fund on giveforward.com. If you have ever been helped by someone else, now is a good time to pay it forward. Here is a link to that page. God bless you! http://gfwd.at/1rz33PW
Reply With Quote
  #20  
Old 06-11-2014, 07:39 PM
Member
 
Join Date: Feb 2013
Location: Southeast PA.
Posts: 138
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 772
Dave in Pa is on a distinguished road
Re: Transmission learning.

Quote:
Originally Posted by ExcursionDiesel View Post
Stay under 2k rpm throughout the first 12 shift cycles. The manual downshifts are necessary to train certain clutch engagement pressure and timings. If you read the TSB, it is more specific and calls for the shift event counters to be manually incremented via WiTech terminal to eliminate the repetition and time spent driving. We have to drive instead. It appears that the first 12 events are critical although the tranny will continue to adapt gradually afterwards.

This is what I understand from reading the TSB. 21-012-14 found on the w2kjeeps.com website.

Thanks a lot! Dave
__________________

__________________
2014 Limited V-6 Tow Pkg 8.4 Cashmere & Light Frost
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
14 Overland Voice Control Learning Mode TitanFlyer Audio/Visual/Navigation 24 01-30-2014 01:51 AM
Is there a "learning curve" with changes on production models? rdalcanto Grand Cherokee - WK2 - 5 11-03-2010 09:01 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 07:14 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by Chrysler Group LLC.