Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and more! - Page 17 - Jeep Garage - Jeep Forum

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  #193  
Old 07-20-2016, 08:05 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Finally got my car back. Can't believe how well it shifts 1-8. It is a phenomenal difference!!!!!! Don't know really what to say other than the shifting goes all to hell as the tranny ages?

Now starts the waiting game.

Tech said I had a bad 1-2 as well. He called a 'flared 1-2'...whatever that means. He also said it goes away at exactly 130 degrees, just like JTS said on his own diagnosis.

Service writer said they are inundated with tranny issues.

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  #194  
Old 07-20-2016, 08:24 PM
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Quote:
Originally Posted by 1st jeep View Post
Finally got my car back. Can't believe how well it shifts 1-8. It is a phenomenal difference!!!!!! Don't know really what to say other than the shifting goes all to hell as the tranny ages?

Now starts the waiting game.

Tech said I had a bad 1-2 as well. He called a 'flared 1-2'...whatever that means. He also said it goes away at exactly 130 degrees, just like JTS said on his own diagnosis.

Service writer said they are inundated with tranny issues.
Keep your fingers crossed. Any feedback from the dealer as to how successful the repair will be? Like maybe they reworked the valve body.
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  #195  
Old 07-20-2016, 08:48 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by JTS97Z28 View Post
Update:
So this is really bizarre. I had another appointment to bring my Jeep back in today for the rough 3-2 downshift. After driving with it for a couple hundred miles I was able to really get a feel for how it was operating and what made the problem minimal and what made it real bad. First off tranny temp didn't seem to effect it, unlike the original harsh 2-3 upshift which was only tranny temps below 130. Driving straight like as if you were coming up to a stop light and the downshift was minimally harsh. Noticeable, but not terrible. Slowing down while in a turn... Like pulling into your driveway or a parking lot and it was downright brutal. Felt like something was gonna break.
So back to the bizarre part, driving home from work yesterday the problem literally disappeared as quickly as it showed up. I thought ehh maybe it was just a fluke and I'll see how it drives to work this morning. Sure enough it's dead smooth...wtf?!? Either my Jeep desperately does not want to go back to the dealership today, or these trannys truly have a mind of there own.
So now what do I do? It's literally driving perfectly as of now lol.

So my question to you guys that have had similar problems to me, did the problem ever randomly go away for a while and eventually show up again, or were your issues continuous and once they started they never went away?
Back when I had the harsh 2-1 and 2-3 shifts on my 14 they did the adaptive relearn. That immediately cured the 2-3 shift but it took about 350 miles of driving to cure the 2-1 shift. Like you, it was there one day and mysteriously disappeared the next. Could that be what's finally happening for you? How many miles have you put on since you had it in?
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  #196  
Old 07-20-2016, 09:04 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

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Originally Posted by jeepgrady View Post
Keep your fingers crossed. Any feedback from the dealer as to how successful the repair will be? Like maybe they reworked the valve body.

Thanks! I def will keep them crossed. They had the car for 10 days working with the engineers.
The dealer is EXTREMELY confident about the repair and even bragged to me about how well it shifts (as soon as I left, I knew what they meant). I admit it's awesome now, just concerned about down the road. Mine started after several thousand. Currently I have 10k.

Good point about the valve body being updated. Hope your are right.
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  #197  
Old 07-20-2016, 11:29 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by MDBones View Post
Back when I had the harsh 2-1 and 2-3 shifts on my 14 they did the adaptive relearn. That immediately cured the 2-3 shift but it took about 350 miles of driving to cure the 2-1 shift. Like you, it was there one day and mysteriously disappeared the next. Could that be what's finally happening for you? How many miles have you put on since you had it in?
Yeah I'm curious about that to I don't know if something just needed time to learn or whatever, but here is a timeline for me. And BTW the Jeep is sill shifting flawlessly for me now.
-purchased Jeep new and shifted great since day 1
-one random day going to work at about 4,000 miles 2-3 shift started acting up only when tranny temp below 130 degrees
-schedule an appointment and they replace valve body and do relearn, get vehicle back and it shifts great!
-50 miles after receiving vehicle back 3-2 downshift randomly started acting up driving home from work. Temperature does not matter, I could manipulate the downshift and make it MUCH worse by being in a turn while it downshift. Like pulling into a parking lot or whatever.
-schedule appointment to take it back. Literally the day I was gonna take it back in it starts shifting perfectly!!
-it's now been 4 days and it is still shifting flawlessly. Hope it stays this way, I'm diggin the Jeep again

As of now no plans to bring the Jeep back in and I'm hoping your right, maybe the computers and valve body just needed a bit of time to do whatever lol.
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  #198  
Old 07-26-2016, 07:01 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

JTS, are you still golden with the 3-2 downshifts?
Mine started on Sunday really bad.

Seems like ours are acting identical. The rest of the shifts are still phenomenal.


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  #199  
Old 07-26-2016, 08:07 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by 1st jeep View Post
JTS, are you still golden with the 3-2 downshifts?
Mine started on Sunday really bad.

Seems like ours are acting identical. The rest of the shifts are still phenomenal.


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Yeah it's pretty much still shifting great and I no longer have a bad 3-2 downshift. I did notice the other day though that I had a noticeable drive train clunk going between drive and reverse. I was fine tuning my jeep in my parking space at work a few days ago and did drive to reverse, and reverse to drive a few times and it was clunky. Hasn't done that since either. It is weird but I'll just pretend to myself it's all a learning process since I had the tranny work done lol. But in all seriousness, it's driving pretty damn good as of right now.
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  #200  
Old 07-26-2016, 08:09 AM
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Quote:
Originally Posted by 1st jeep View Post
JTS, are you still golden with the 3-2 downshifts?
Mine started on Sunday really bad.

Seems like ours are acting identical. The rest of the shifts are still phenomenal.

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So, what you're saying is the problem is back?
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  #201  
Old 07-26-2016, 09:28 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by jeepgrady View Post
So, what you're saying is the problem is back?

No. My original problem was the 2-3 upshift when cold.
Like JTS I developed a very harsh 3-2 downshift. I'm hoping it will go away like his did.

Are you still in a holding pattern with yours? Did you develop a 3-2 downshift issue like we did?


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  #202  
Old 07-26-2016, 11:59 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Last conversation with my dealer was Friday. It seems the second request sent to Chrysler as to a solution only gave the same steps that the dealer had already taken. Another request was sent.

In the interim, he told me that he will present the issue to a District Chrysler field service rep. for his input. He told me that this district individual would have any knowledge as to whether any software updates are being designed. My service guy also feels that the issue is software related as opposed to mechanical.
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  #203  
Old 07-27-2016, 08:47 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by 1st jeep View Post
Like JTS I developed a very harsh 3-2 downshift. I'm hoping it will go away like his did.
Just curious, how long has it been since the original work was done (valve body replacement)? Reason I ask is just because I want to compare to my timeline to see if there is any hope that yours will somehow fix itself or learn like mine did.
So like I said before, after the original valve body replacement (7-8-16) the car worked perfectly for 50 miles, then that's when the bad 3-2 downshift started.
I then had an appointment on 7-18-16 to get it back in as some of the downshifts were pretty bad like if it happened while in a turn it was not pleasant. So literally the DAY OF my appointment on the 18th the Jeep started shifting perfectly and I never took it in. I am now going on day 10 of good shifting and about 600 total miles since the valve body was replaced.
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  #204  
Old 07-27-2016, 01:41 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

I wish I checked the mileage...it had to have been 40-50 miles. Def not more than 60 if I do the math.

I picked it up on Wed afternoon the 20th and it was already doing Friday the 22nd.

It is so harsh and very audible


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