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  #313  
Old 09-12-2013, 12:25 PM
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Re: I Think I Fixed My Rough Shifting 8sp Transmission

Thanks - I was having a moment with ZERO brain activity when I wrote that!

Will do. Will post my results after I give it a shot.

Off hand, does anyone know the size of the terminal connector bolt?
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  #314  
Old 09-12-2013, 12:29 PM
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Re: I Think I Fixed My Rough Shifting 8sp Transmission

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Originally Posted by cnynctry View Post
Wonder if there is a fuse that we can pull to do the same thing. I pull a specific fuse on my 2010 Challenger R/T every once in a while to wake the car up. Throttle response and shift points reset. But like most are saying adaptive learning starts up again and have to do a reset. Guess I'll try the battery reset on the GC unless I can find the right fuse.
Yup that's what happens.

I pulled battery cable and things did seem to reset.

This is on Jeep built after July 14th so it should have new Transmission Firmware.

It was better (still not as good as Non Eco mode) but better than it was.
Over time it came back.

I cleared Fault Codes last night and the software says Engine may run rough as it relearns/recalibrates itself. I suspect it may have wiped Transmission learning too. Because ECO felt better this morning.

But I have to be careful. Most of the time it's fine.

It's just in certain situations, it's down right dangerous.

It's like your going 30 mph (or so) and it just up shifted, say to 6th and you need to goose it to get yourself to where you feel you want to be. And you just goose it, a little. And you get NOTHING. Your immediate reflex is, to GET Where you planned to be, is goose it more. If you waited it would eventually downshift mildly. But since you goosed it more (to get things going) it down shifts a LOT. Like it might go down to 3rd gear. And now your passengers are panicked. Engine is racing. And you go PAST where you wanted to be. It really sucks when it does this. And there is no reason it needs to and doesn't save gas. In fact, it wastes it.

It does not do this in Non Eco. Mostly because it will be 1 gear lower in the first place and may not need to downshift at all. And if you do, it responds quicker to mild acceleration, with a mild downshift (1 gear). Which is all you wanted !!

It's hard to anticipate you need it with Paddle Shifters or Sport mode (which engage great) it's the driver that can't engage it fast enough sometimes.
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  #315  
Old 09-12-2013, 01:50 PM
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Re: I Think I Fixed My Rough Shifting 8sp Transmission

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Originally Posted by TC74 View Post
Thanks - I was having a moment with ZERO brain activity when I wrote that!

Will do. Will post my results after I give it a shot.

Off hand, does anyone know the size of the terminal connector bolt?
10mm
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  #316  
Old 09-14-2013, 10:02 AM
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Re: I Think I Fixed My Rough Shifting 8sp Transmission

Looks like they just updated (9/11/13) the TSB on the fix and also made it a RRT item. See http://www.wk2jeeps.com/tsb/tsb_wk2_2100713a.pdf. Mine is at the dealer right now getting this new tranny fix as well as the HVAC fix. I'll let you know how it goes.
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  #317  
Old 09-14-2013, 12:07 PM
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I just got back from having the latest trams update and it seems to be very smooth. My trams only had the occasional Clunk but it seems to shift better now.
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  #318  
Old 09-14-2013, 12:08 PM
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Quote:
Originally Posted by gaoc1 View Post
I just got back from having the latest trams update and it seems to be very smooth. My trams only had the occasional Clunk but it seems to shift better now.
Sorry should say trans
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  #319  
Old 09-14-2013, 12:12 PM
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Re: I Think I Fixed My Rough Shifting 8sp Transmission

Just purchased a 2014 GC Limited 2 weeks ago and I'm experiencing the same transmission issues along with the vehilce jerking on start up. Called the dealer and explained the problems and was told this operation is typical for the 8 speed transmission. Going to try the reset and see if it helps, if not going to try getting the TCM software upgrade.

Thanks for the info, I'll let you know how it works.
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  #320  
Old 09-14-2013, 01:14 PM
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Re: I Think I Fixed My Rough Shifting 8sp Transmission

I just returned from the dealer and had the latest update on the tranny done (RRT 13-066).

WOW!!!! It's like a different vehicle - it's awesome!!!!

Keep in mind that I only drove it a few miles home, but this is how I expect a vehicle to drive.

I took delivery on May 10th. Was very unhappy with the tranny. After pulling the negative cable (per this post), the tranny was significantly better and I was okay with the way it drove. So much so that I never took it to the dealer in the beginning of August when this first flash was available.

But now - huge difference. It's as if the ECO button is not even on. I have pep when I step on the gas, the hard down shifting is gone. This is the way this vehicle should have been shipped and probably why they delayed the Cherokee model so long.

In fact, while at the dealer I just purchased another 2014 JGC Limited in Deep Cherry Red for my wife! We take delivery on Monday!!!!

I urge EVERYONE to get this done!!!!
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  #321  
Old 09-14-2013, 02:57 PM
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Just got the new trans update done. Only drove it about a mile seems much better for now except for coming to a stop when it downshifts into 1st you still!!!!!!!" Feel a bump.
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  #322  
Old 09-14-2013, 03:03 PM
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Quote:
Originally Posted by nickm View Post
Just got the new trans update done. Only drove it about a mile seems much better for now except for coming to a stop when it downshifts into 1st you still!!!!!!!" Feel a bump.
I was hoping this update would fix that happening.
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  #323  
Old 09-14-2013, 07:58 PM
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Let's see how it is in a week before I pass final judgement on the update. Overall it is smoother than when it was new and I felt like getting rid of it after only a couple hundred miles, right now it has about 4900. The dealer has to change the water pump because its making a squealing noise. One thing after another.
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  #324  
Old 09-15-2013, 01:32 PM
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Quote:
Originally Posted by nickm View Post
Just got the new trans update done. Only drove it about a mile seems much better for now except for coming to a stop when it downshifts into 1st you still!!!!!!!" Feel a bump..
Maybe they accidentally reset your adaptive settings??? (I hope haha)
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