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  #37  
Old 03-20-2014, 09:43 PM
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I have one the first EcoDiesels as well. No flashes yet. My transmission hasn't shown any noticeable behavior except a shudder if accelerating hard and it upshifts right after I lift the accelerator. The engine is dropping rpm while it shifts. It feels like the torque converter is locking after the shift and I feel a slight shudder as engine rpm drops quickly....almost like a manual transmission shifted at too low an rpm and creating a shudder as the engine rpms sync to the transmission. Anyone else notice this?
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  #38  
Old 03-20-2014, 10:11 PM
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The biggest complaint I have is the clunk after starting out. I.e. Start the vehicle, gradually accelerate and let off the accelerator to come to a stop and then a very noticeable CLUNK. It occurs about 95% of the time.

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  #39  
Old 03-21-2014, 11:24 AM
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Re: Transmission is starting to get very annoying

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Originally Posted by Shannon View Post
Just got the transmission flash, along with 4 other flashes done today. I am finding it stays in a lower gear slightly longer. I thought the previous version was slightly smoother, but will give it a few days for me to adjust to the new shifting. Otherwise, no significant difference, but never had a problem with the transmission since I bought the Jeep. Mine was built in September/October, and was one of the first EcoDiesels off the line.
Apples and Oranges.

The larger transmission on the V8 and Diesel didn't have the firmware issues that are mostly being discussed here on the smaller transmission available on the 3.6L.

Not surprised you didn't see much change.
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  #40  
Old 03-21-2014, 11:30 AM
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Re: Transmission is starting to get very annoying

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Originally Posted by recoil1911 View Post
The biggest complaint I have is the clunk after starting out. I.e. Start the vehicle, gradually accelerate and let off the accelerator to come to a stop and then a very noticeable CLUNK. It occurs about 95% of the time.

Sent from my SAMSUNG-SM-N900A using Tapatalk
Mine never clunked in any condition on any firmware (I never had the earliest firmware though).

I think CLUNKing might be a hardware issue. It's mentioned quite a bit.

I suspect it has something to do with the "Valve Body" (as mentioned in some threads) and a valve is sticking, or slow to open or close when it should.

It could also be how you drive and how it has adapted to your driving that accounts for differences in behavior that people see.
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  #41  
Old 03-21-2014, 11:38 AM
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Re: Transmission is starting to get very annoying

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Originally Posted by mswlogo View Post
Apples and Oranges.

The larger transmission on the V8 and Diesel didn't have the firmware issues that are mostly being discussed here on the smaller transmission available on the 3.6L.

Not surprised you didn't see much change.
Nowhere in the heading or first post does this state is is about the 3.6L No apples, no oranges, just transmissions. I was just posting to let others know how the flash worked on the EcoDiesel.
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  #42  
Old 03-21-2014, 11:58 AM
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The issues described in the OP are mostly limited to the smaller ZF and 3.6 motor combo. Expecting a small low torque motor setup to deliver efficiency to perform without aggressively applying throttle is unreasonable...especially in a 5k pound vehicle. The ECO mode shifts early to higher gears and resists downshifts so that only makes the feeling of sluggishness more apparent.

The Pentastar 3.6 is setup for maximum economy but as soon as you drive it in a non-economical manner, the engine is no longer at its most efficient rpm range where it has minimal torque, and efficiency goes out the window. To prevent that, ECO mode resists down shifting. The firmware can be changed, but there goes the efficiency.

You can't have it all...at least not at the same time!
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  #43  
Old 03-24-2014, 03:45 PM
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Re: Transmission is starting to get very annoying

I purchased a $45,000 loaded limited 4X4 in December 13 with a build date of October 13. I have been experiencing hard downshift issues and a lurching forward when stopping since delivery.

I have brought it in several times to 3 different service departments, all in the Bay Area, CA. I even took a "Jeep Transmission Specialist" on a test drive, in which he noticed that the car severely jerked and lurched forward when coming to a stop whether at a stop sign or a red light. Mind you, that was AFTER the "TSB Software Update" that was designed to "address" concerns over the transmission. He admitted that the car did not seem to performing normally, and kept the Jeep for 8 days meanwhile putting me in a Challenger.

Low and behold, I get a call from the Area Service Manager after 8 days who says that Jeep Engineers and Chrysler Corporate admit that a "repair" is needed, however there is not a repair available right now, so they are labeling the lurching/jerking while stopping "normal and acceptable car behavior." He said that there was nothing they were willing to do, and to come pick up the Jeep immediately. He told me that the 2014 Jeep Grand Cherokee was "essentially a beta product" and that the company "learns from issues on their models."

I refused to accept that, as a young father, I put my children's safety at risk due to this "normal behavior" while coming to a stop. I have been in constant communication with Chrysler Corporate and have been elected to be a part of their "Enhanced Customer Care" group. They were considering a buyback of the vehicle or replacing the Jeep with a different one, however have just called me and told me that they were not willing to do so. They admit that there is an "issue" however as it is now considered "normal behavior" so we, as consumers, should just accept that.

I informed them that I would be looking into the Lemon Law of California and other consumer advocate groups that would assist me with my concern. Paying $600 a month for a vehicle that you are apprehensive to drive due to a safety issue is absolutely ridiculous. They seemed nervous when I brought up the term lawsuit, and gave me a number for a "Chrysler arbitration" company that would negotiate with me.

Sorry for the long rant, but this really is ridiculous. I previously had a 2012 Grand Cherokee that has no issues at all, and this "normal behavior" is anything but. Luckily my employer has a lot of legal resources and is looking into the issue for me.

Not to sound like a typical American, but anyone interested in a Class Action? Or at least getting together an open letter to send to Chrysler Corporate with all the names of those experiencing this issue? Let me know your thoughts, PM or here
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  #44  
Old 03-24-2014, 03:55 PM
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Re: Transmission is starting to get very annoying

Quote:
Originally Posted by recoil1911 View Post
The biggest complaint I have is the clunk after starting out. I.e. Start the vehicle, gradually accelerate and let off the accelerator to come to a stop and then a very noticeable CLUNK. It occurs about 95% of the time.

Sent from my SAMSUNG-SM-N900A using Tapatalk
This is the biggest problem I have with mine as well. It's just an unhappy noise more than anything, but I can usually overcome it by changing my driving style. Just push harder on the gas to make it shift faster and do less heel-to-toe sensitive acceleration between 1 & 2 gears. Seems to usually work for me, but sometimes it's just not avoidable.
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  #45  
Old 03-24-2014, 03:56 PM
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Re: Transmission is starting to get very annoying

Quote:
Originally Posted by jeepdude92 View Post
I purchased a $45,000 loaded limited 4X4 in December 13 with a build date of October 13. I have been experiencing hard downshift issues and a lurching forward when stopping since delivery.

I have brought it in several times to 3 different service departments, all in the Bay Area, CA. I even took a "Jeep Transmission Specialist" on a test drive, in which he noticed that the car severely jerked and lurched forward when coming to a stop whether at a stop sign or a red light. Mind you, that was AFTER the "TSB Software Update" that was designed to "address" concerns over the transmission. He admitted that the car did not seem to performing normally, and kept the Jeep for 8 days meanwhile putting me in a Challenger.

Low and behold, I get a call from the Area Service Manager after 8 days who says that Jeep Engineers and Chrysler Corporate admit that a "repair" is needed, however there is not a repair available right now, so they are labeling the lurching/jerking while stopping "normal and acceptable car behavior." He said that there was nothing they were willing to do, and to come pick up the Jeep immediately. He told me that the 2014 Jeep Grand Cherokee was "essentially a beta product" and that the company "learns from issues on their models."

I refused to accept that, as a young father, I put my children's safety at risk due to this "normal behavior" while coming to a stop. I have been in constant communication with Chrysler Corporate and have been elected to be a part of their "Enhanced Customer Care" group. They were considering a buyback of the vehicle or replacing the Jeep with a different one, however have just called me and told me that they were not willing to do so. They admit that there is an "issue" however as it is now considered "normal behavior" so we, as consumers, should just accept that.

I informed them that I would be looking into the Lemon Law of California and other consumer advocate groups that would assist me with my concern. Paying $600 a month for a vehicle that you are apprehensive to drive due to a safety issue is absolutely ridiculous. They seemed nervous when I brought up the term lawsuit, and gave me a number for a "Chrysler arbitration" company that would negotiate with me.

Sorry for the long rant, but this really is ridiculous. I previously had a 2012 Grand Cherokee that has no issues at all, and this "normal behavior" is anything but. Luckily my employer has a lot of legal resources and is looking into the issue for me.

Not to sound like a typical American, but anyone interested in a Class Action? Or at least getting together an open letter to send to Chrysler Corporate with all the names of those experiencing this issue? Let me know your thoughts, PM or here
What date was it that they came back and said there was nothing they could/would do?

It does appear there is something else going on with jerking, clunking hard shifting beyond the TSB firmware updates that not everyone shares.

If it were mine, I'd try clearing the adaptive learning (which I suspect they already did). I'm not sure the method even works to clear adaptive learning. But you disconnect battery for a little while and hold brakes for a minute to bleed it down.

I'd also want to see evidence (proof) that all flashes have been applied. Not just an invoice. Or their word. I'd want to see it hooked up to computer saying no updates needed.
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  #46  
Old 03-27-2014, 09:53 AM
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Re: Transmission is starting to get very annoying

Thanks for all the info. I'm glad to hear there is a TSB out and many people are reporting better shifting. My Jeep was built 9/10/13 and it's now due for it's 1st oil change at 6 months 3900 miles.

Also to the guys talking about the clunking and lurching..mine does that too when I first start the vehicle and take off. It's like it tries to hold first gear then just slams into the next gear. It only does that at the beginning and I guess chalked it up to the fluid needing to warm up.
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