Newest TCM flash. Don't get it if you're not having issues - Jeep Garage - Jeep Forum

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Old 09-24-2014, 12:18 PM
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Newest TCM flash. Don't get it if you're not having issues

We all know all the issues we have been having with shudder.

If you don't have issues DO NOT get this flash. Jeep changed the entire shift strategy to avoid shudder, in doing this they have killed fuel economy on anything other than flat ground.

I data logged to confirm my suspicion. If you have the cruise on in a hilly spot it's the most noticeable. The jeep will not allow more than 20% pulse width below 2000 rpm in gears 5-8 (that I have confirmed). so now instead of using tq to help up hills it bogs down and down shifts killing economy.

To say I am pissed that Jeep is "detuning" our vehicles to avoid design flaw is an understatement.

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Old 09-24-2014, 12:19 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

It applies in sport and drive... checked both
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Old 09-24-2014, 12:24 PM
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I can't even hold a moderate hill like I used to. Making my purchase of a diesel completly useless. Beyond pissed at Jeep.
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Old 09-24-2014, 03:56 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

Mpg has dropped to 19-20 with this new flash because it's always downshifting
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Old 09-24-2014, 07:27 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

Anyone else seeing reduced MPG's since getting the flash?
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Old 09-24-2014, 07:27 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

If you live where it's flat I doubt they will notice. ... I live in CO, it's not flat here.
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Old 09-24-2014, 07:48 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

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Originally Posted by 2009RavenR1 View Post
If you live where it's flat I doubt they will notice. ... I live in CO, it's not flat here.
So the fix might be good for most folks. If so, Jeep made the right decision. But, they need to continue to work for those that still have an issue.


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Old 09-24-2014, 07:49 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

Well my dealer is bypassing all the BS and going straight to corporate to get mine bought back. Done with this BS.
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Old 09-24-2014, 08:32 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

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Originally Posted by 2009RavenR1 View Post
Well my dealer is bypassing all the BS and going straight to corporate to get mine bought back. Done with this BS.
According to your experience the update was a workaround and not a fix. I'd be pretty pissed in that scenario as well. You can't sell a jeep on good mpg and void that with a workaround. Are you trading for a new jeep or moving on?
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Old 09-24-2014, 08:34 PM
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Quote:
Originally Posted by Timo13 View Post
According to your experience the update was a workaround and not a fix. I'd be pretty pissed in that scenario as well. You can't sell a jeep on good mpg and void that with a workaround. Are you trading for a new jeep or moving on?
Back into a real diesel..aka full size duramax. Would love this Jeep if it didn't have issues.

And mpg is the only reason I took this over the hemi
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Old 09-24-2014, 08:37 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

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Originally Posted by 2009RavenR1 View Post
Well my dealer is bypassing all the BS and going straight to corporate to get mine bought back. Done with this BS.
Hope that works out. Sucks having a vehicle you are not happy with.



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Old 09-24-2014, 08:42 PM
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Re: Newest TCM flash. Don't get it if you're not having issues

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Originally Posted by bill_de View Post
Hope that works out. Sucks having a vehicle you are not happy with.



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