Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and more! - Page 12 - Jeep Garage - Jeep Forum

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  #133  
Old 06-24-2016, 08:09 AM
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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 Joshi View Post
I had the same issue, got a new transmission about 1000 miles ago, now the issue is starting again. It's subtle, but that's how it all began on the first transmission. This blows.

Holy smokes!! Can't believe it is starting again. Wish we could get the '16 tranny put in.

Did the dealer try other fixes prior, or did they go straight for the replacement.


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  #134  
Old 06-24-2016, 08:21 AM
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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 silvermax04 View Post
Well I think your about due for a change and back to the v8 with the 8HP70, problem solved lol
You know it's funny I thought about that, had I just kept my Summit V8 I wouldn't have this problem lol. That Summit actually had a couple quirks that sort of bothered me as well though that I'm not sure could have ever been fixed. One of them was actually tranny related (I think) where during WOT it felt like the first gear it kicked down to was slipping, then the next gear felt perfect. The other is the thing had some bad rattle at full throttle that sounded like it was coming from the drivers footwell, but was a metallic like sound. The last thing was during driving last winter in snow, it felt like the Jeep had a bad tranny or engine mount. Again, the weirdest thing, but it only did it while driving in snow and the best way to describe this was like as if a suspension component or engine/tranny mount was loose. My 2015 does none of that and for that reason I am still thrilled with my 2015. The only thing that now worries me is what if there is absolutely no fix for this tranny issue? I mean its not terrible, but I would say its noticeable enough that if say someone drove my car they would be like whoa, wtf was that haha.
I want to try one more thing today. yesterday I was driving, and the tranny was already getting warmed up a bit, but was still below 130, I put it in sport mode and the 2-3 shift was flawless. Today when I drive for the first time I will put it in sport mode right away and see what it does.

So my question to you guys with tranny issues, lets say there literally is no fix for it, do you guys just plan on dealing with it and keeping the Jeep? I know it only effects the first 5 or so minutes of driving, but its still an issue nonetheless. Just curious what you guys plan on doing in the long wrong. I wonder if this harsh2-3 shift has any negative effect on the tranny itself?


Quote:
Originally Posted by MDBones View Post
The 16's already have the trans preheater.

As for the adaptive relearn... this can take a few hundred miles of driving for the harsh up or down shift to completely disappear. I had the harsh 1-2 and 3-2 shifts on my 14. The relearn immediately took care of the 3-2 shift but it took 350-400 miles of driving before the 1-2 shift disappeared. Give it some time before you push for a new valve body or trans replacement.
It will be interesting to see here in the near future as 2016 V6 owners pass a few thousand miles if they will suffer the same issues even with the preheater. Just curious, when you first start off for the day, do your tranny temps rise much quicker than they do on a 2015 or earlier model?

Quote:
Originally Posted by Joshi View Post
I had the same issue, got a new transmission about 1000 miles ago, now the issue is starting again. It's subtle, but that's how it all began on the first transmission. This blows.
Sorry to hear that. What do you plan on doing? Just deal with it or keep working with the dealer, or just get rid of the thing?
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  #135  
Old 06-24-2016, 09:16 AM
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Quote:
Originally Posted by JTS97Z28 View Post

You know it's funny I thought about that, had I just kept my Summit V8 I wouldn't have this problem lol. That Summit actually had a couple quirks that sort of bothered me as well though that I'm not sure could have ever been fixed. One of them was actually tranny related (I think) where during WOT it felt like the first gear it kicked down to was slipping, then the next gear felt perfect. The other is the thing had some bad rattle at full throttle that sounded like it was coming from the drivers footwell, but was a metallic like sound. The last thing was during driving last winter in snow, it felt like the Jeep had a bad tranny or engine mount. Again, the weirdest thing, but it only did it while driving in snow and the best way to describe this was like as if a suspension component or engine/tranny mount was loose. My 2015 does none of that and for that reason I am still thrilled with my 2015. The only thing that now worries me is what if there is absolutely no fix for this tranny issue? I mean its not terrible, but I would say its noticeable enough that if say someone drove my car they would be like whoa, wtf was that haha.
I want to try one more thing today. yesterday I was driving, and the tranny was already getting warmed up a bit, but was still below 130, I put it in sport mode and the 2-3 shift was flawless. Today when I drive for the first time I will put it in sport mode right away and see what it does.

So my question to you guys with tranny issues, lets say there literally is no fix for it, do you guys just plan on dealing with it and keeping the Jeep? I know it only effects the first 5 or so minutes of driving, but its still an issue nonetheless. Just curious what you guys plan on doing in the long wrong. I wonder if this harsh2-3 shift has any negative effect on the tranny itself?

It will be interesting to see here in the near future as 2016 V6 owners pass a few thousand miles if they will suffer the same issues even with the preheater. Just curious, when you first start off for the day, do your tranny temps rise much quicker than they do on a 2015 or earlier model?

Sorry to hear that. What do you plan on doing? Just deal with it or keep working with the dealer, or just get rid of the thing?
There was a transmission tech on here at one point that mentioned something you may want to try, I don't know where the thread is though, you could probably sift around and find it. He said that an alternate way to clear the memory cells in the trans was to pull the battery cable and leave it off for at least 12+ hours. Not saying that will definitely fix it but maybe something to try. Also get current on available flashes. The auto park recall that just came out includes a TCM update, shifting is not the intent of that flash but sometimes they slip unadvertised minor fixes into flashes.

My 8HP70 has been flawless other than some normal learning the first 1000 miles, currently at 35k it was one of the early Germany made versions. Early MY2014 v8s got ZF made in Germany 8HP70, later MY2014+ v8s got ZF made in Atlanta USA 8HP70 and the MY2014 v6s got an FCA made in Indiana USA 845RE. FCA mucked with the design on the 845REs and there lies the problem some are having IMO. I just think it's not acceptable people are still seeing this same problem years later on the 845REs. I would push them to fix it especially since it was not doing it before, there are several threads of people describing the same problem of it starting few thousand miles later like that.
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  #136  
Old 06-24-2016, 09:59 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

[QUOTE=silvermax04;1300924]There was a transmission tech on here at one point that mentioned something you may want to try, I don't know where the thread is though, you could probably sift around and find it. He said that an alternate way to clear the memory cells in the trans was to pull the battery cable and leave it off for at least 12+ hours. Not saying that will definitely fix it but maybe something to try. Also get current on available flashes. The auto park recall that just came out includes a TCM update, shifting is not the intent of that flash but sometimes they slip unadvertised minor fixes into flashes.

There is a thread I read last night, can't find it now, where someone had a hard shift problem. That person had the recall performed and it allegedly fixed the harsh shift issue. I wasn't going to get the recall, as I have no problem, however, now I might just do it to see if it fixes my harsh 2-3 problem.
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  #137  
Old 06-24-2016, 10:06 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by silvermax04 View Post
There was a transmission tech on here at one point that mentioned something you may want to try, I don't know where the thread is though, you could probably sift around and find it. He said that an alternate way to clear the memory cells in the trans was to pull the battery cable and leave it off for at least 12+ hours. Not saying that will definitely fix it but maybe something to try. Also get current on available flashes. The auto park recall that just came out includes a TCM update, shifting is not the intent of that flash but sometimes they slip unadvertised minor fixes into flashes.
I did disconnect the battery and left it disconnected for probably about an hour. Certainly not 12 hours so maybe that would let things completely clear or maybe not I'm not sure. Couldn't hurt to try I suppose, and whats nice about the Grand Cherokee is when disconnecting the battery you lose NO settings except for audio EQ. I think thats awesome because in some cars disconnecting the battery and then having to reset so many things is just too much of a pain.
When my Jeep goes in I will for sure have them update everything. Actually when I had my Summit, when I went in for the first oil change they advised me that there were 3 updates avfailable and if I would like they would apply them. I thought that was kind of nice so I will be doing the same at this visit.
They will actually be fairly busy with my Jeep as I have a small laundry list of things that need attention. Most minor, but I would rather get it all done in one shot if its gonna go in.
-2 recalls (shifter and caliper)
-Harsh 2-3 shift
-Heated seat TSB update (for weak heated seats in HA)
-Auto high beams have never worked correctly (sensor needs calibration I think)

Things I may or may not mention to the dealership:
-Occasionally the drivers side rear door speaker will pop before or after a door is opened. Others have mentioned having this issue as well. Happens maybe once a month. If it happens when you're in the car it can be quit startling lol.
-The rear seat seat backs have play in them. If you grab the top of the seat back you can move them back and forth a little. You can also feel the play if you're sitting in the seat. Others have also reported this issue. When I went to the dealership some seat backs were rock solid, others had a little play.
-During the winter (below 32 degrees, maybe even lower), the interior blower motor will have a high pitched squeal for about 20 seconds then go away for good. Yet another fairly common issue that I have seen other owners report.

With this list I hope I'm not coming off as some anal and picky car guy, but in reality they are all items that would be annoying to anyone and I feel are very justifiable items to have addressed. I mean who wants to hear their new car air conditioning squeal loudly for a short while, or who wants to jump out of their seat when the speaker decides its time to pop lol. Or how should there be any play whatsoever in a seat? Auto high beams should turn off a little earlier than when an oncoming car is 4 car lengths ahead of you. Infact they cant even be used because sometimes they simply do not go off at all. I use that feature often since some of my commutes home from work are at 10 at night on dark roads so its a nice feature to have. Great car, and most of the things I mentioned do not affect the everyday driving experience so I still love the thing!
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  #138  
Old 06-24-2016, 10:07 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by JTS97Z28 View Post
It will be interesting to see here in the near future as 2016 V6 owners pass a few thousand miles if they will suffer the same issues even with the preheater.
i've got ~5k now and shifting has actually gotten better. first couple k, 2-3 was a little rough. pretty good now.
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  #139  
Old 06-24-2016, 11:32 AM
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Quote:
Originally Posted by JTS97Z28 View Post

I did disconnect the battery and left it disconnected for probably about an hour. Certainly not 12 hours so maybe that would let things completely clear or maybe not I'm not sure. Couldn't hurt to try I suppose, and whats nice about the Grand Cherokee is when disconnecting the battery you lose NO settings except for audio EQ. I think thats awesome because in some cars disconnecting the battery and then having to reset so many things is just too much of a pain.
When my Jeep goes in I will for sure have them update everything. Actually when I had my Summit, when I went in for the first oil change they advised me that there were 3 updates avfailable and if I would like they would apply them. I thought that was kind of nice so I will be doing the same at this visit.
They will actually be fairly busy with my Jeep as I have a small laundry list of things that need attention. Most minor, but I would rather get it all done in one shot if its gonna go in.
-2 recalls (shifter and caliper)
-Harsh 2-3 shift
-Heated seat TSB update (for weak heated seats in HA)
-Auto high beams have never worked correctly (sensor needs calibration I think)

Things I may or may not mention to the dealership:
-Occasionally the drivers side rear door speaker will pop before or after a door is opened. Others have mentioned having this issue as well. Happens maybe once a month. If it happens when you're in the car it can be quit startling lol.
-The rear seat seat backs have play in them. If you grab the top of the seat back you can move them back and forth a little. You can also feel the play if you're sitting in the seat. Others have also reported this issue. When I went to the dealership some seat backs were rock solid, others had a little play.
-During the winter (below 32 degrees, maybe even lower), the interior blower motor will have a high pitched squeal for about 20 seconds then go away for good. Yet another fairly common issue that I have seen other owners report.

With this list I hope I'm not coming off as some anal and picky car guy, but in reality they are all items that would be annoying to anyone and I feel are very justifiable items to have addressed. I mean who wants to hear their new car air conditioning squeal loudly for a short while, or who wants to jump out of their seat when the speaker decides its time to pop lol. Or how should there be any play whatsoever in a seat? Auto high beams should turn off a little earlier than when an oncoming car is 4 car lengths ahead of you. Infact they cant even be used because sometimes they simply do not go off at all. I use that feature often since some of my commutes home from work are at 10 at night on dark roads so its a nice feature to have. Great car, and most of the things I mentioned do not affect the everyday driving experience so I still love the thing!
I think removing the battery cable for 1 hour is fine for a general reset of other items but to clear the trans memory cells it was either 12 or 14 hours, or some number like that the tech was saying. Id get the flashes in place first then pull the cable for the 12+ hours because i think its not a bad idea anyway doing a battery cable rest with so many flashes taking place. Flashes have caused me gremlins more than once that the cable pull has corrected.
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  #140  
Old 06-24-2016, 12:26 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 1st jeep View Post
Holy smokes!! Can't believe it is starting again. Wish we could get the '16 tranny put in.

Did the dealer try other fixes prior, or did they go straight for the replacement.
They went straight for the replacement. I hoped (apparently foolishly) that this would do the trick.
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  #141  
Old 06-24-2016, 12:32 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 JTS97Z28 View Post

So my question to you guys with tranny issues, lets say there literally is no fix for it, do you guys just plan on dealing with it and keeping the Jeep? I know it only effects the first 5 or so minutes of driving, but its still an issue nonetheless. Just curious what you guys plan on doing in the long wrong. I wonder if this harsh2-3 shift has any negative effect on the tranny itself?



It will be interesting to see here in the near future as 2016 V6 owners pass a few thousand miles if they will suffer the same issues even with the preheater. Just curious, when you first start off for the day, do your tranny temps rise much quicker than they do on a 2015 or earlier model?


Sorry to hear that. What do you plan on doing? Just deal with it or keep working with the dealer, or just get rid of the thing?
Right now the issue is still intermittent, but getting more frequent. When it gets more predictable I'll bring it back to work with the dealer and see what they suggest next. I dunno - maybe they can retrofit a preheater?
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  #142  
Old 06-25-2016, 10:04 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Does anyone know how this so-called preheater works? Is it something that can be retrofitted? Seems to me that since they have added the preheater, they are admitting that there is a problem.
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  #143  
Old 06-25-2016, 11:45 AM
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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
Does anyone know how this so-called preheater works? Is it something that can be retrofitted? Seems to me that since they have added the preheater, they are admitting that there is a problem.
I read on the forum that it is a temp controlled bypass that bypasses the trans cooler until a certain temp is reached. Not actually a preheater but a pre-not-cooler.
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  #144  
Old 06-25-2016, 12:18 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

So then in reality unless something else was changed as well I wouldn't be surprised if we eventually hear about 2016 harsh shifts as well. They just won't experience the harsh shifts as long as the tranny temp will rise a little quicker.
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