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  #25  
Old 11-10-2011, 01:08 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

My experience has not been good with this misfire. As with yours, I did not have an issue for a few thousand KM's, then it started and was minor but annoying but since has gotten worse. many trips to dealer, calls to customer service and only thing they now respond is that this is normal. No explanation as to why it was not present from new...no explanation as to why it has gotten worse over time and no information if it will continue to get worse or not.
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  #26  
Old 11-10-2011, 02:24 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

Dear all,

I have been fighting with this issue since June (misfire sensation under light acceleration) and had the car inspected, tested by a number of engineers, and no solution has been found (applied all TSBs for driveability, which made the gearbox itself smmother in changing gear, but resolved none of these sypmtoms).

So, how does the misfire/surge/shudder sensation manifests itself?

1) In 4th and 5th gear once the torque converter has locked up
2) Whilst accelerating softly enough so that the car does not unlock the torque converter and changes down a gear
3) From 40mph+, between 2000-2500 rpm
4) In all modes, Auto/sport etc, as well as in D or Autostick (when allegedely the MDS is not operational)
5) When driving at 70-80mph, I also get a slight vibration "driving over washboard effect", particularly when driving up a slight incline with the cruise control on.

The technical explanation given to me 3 times now by the service manager who has spent hours in friendly conversations with me:

1) Connecting the laptop to the ODC whilst driving, he could see that under the conditions described above the torque converter keeps locking in/out in succession, within few hundreds of a second

2) This is driven by the MDS software, the MDS needs the torque converter to lock/unlock when engaging/disengaging

3) This command to the torque converter is given also when in Autostick mode, and it exhibits the same behaviour, although the MDS is allegedely not active

4) The issue does not occur in lower gears because the torque converter does not lock up

5) Subsituting the torque converter will not improve things as mechanically there is no slip or any loss in it at all

A Starcase is open at Chrysler to look into the issue.

Do I believe all of this? Well, who knows.
The only doubt that I have is whether the 4x4 system has any play in this at all.
The question back to you folks: do you all have 4x4 and accuse these symptoms?

The Jury has emitted its verdict though: that is the way the car is and will remain. I wanted to switch to the 2012 model, until I found out that the gearbox is exactly the same, just reprogrammed.

Appalling, as a drivetrian issue as serious as this on this type of vehicle is enough to steer customers away. I come from a history of bmw and audis, and no way they exhibilt any form of embedded mechanical imperfection. Some have issue, yes, but they do not come with a drivetrain issue as standard.

All the best,

Daniele
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  #27  
Old 11-10-2011, 03:06 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

Daniele, I think the worst part for me is that this issue was either not present or so minor it was not noticeable to me when new...and then it started doing it and has gotten worse as miles go on (now at 36,000km). This lends me to believe that something is degrading causing this issue to get worse over time/mileage. I would like to post a pic of the spark plugs out of my engine for everyones review...can someone let me know how to add a picture???
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  #28  
Old 11-10-2011, 07:35 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

Guys here is an update on mine. I had the torque converter replaced several weeks ago and it's actually been worse since it was replaced. I took it in a week after the install and had the service manager drive it and he acknowledged that he felt the shuddering sensation and would apply the TSB update AGAIN as it might not have taken the first time I brought it in. I've taken it in three times alone now for this problem and I'm still having the same shuddering. I'm calling Chyrsler tomorrow to open a case. I am not happy since I've had five visits in four months of ownership for major faults. I'm almost to the point of trading it in and taking a loss on it.
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Old 11-10-2011, 10:06 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

I hope you make out better with them than I did.
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  #30  
Old 11-11-2011, 08:51 AM
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Re: Surging/shuddering between 40-60mph in 5.7l

Quote:
Originally Posted by Troy Cruise View Post
Guys here is an update on mine. I had the torque converter replaced several weeks ago and it's actually been worse since it was replaced. I took it in a week after the install and had the service manager drive it and he acknowledged that he felt the shuddering sensation and would apply the TSB update AGAIN as it might not have taken the first time I brought it in. I've taken it in three times alone now for this problem and I'm still having the same shuddering. I'm calling Chyrsler tomorrow to open a case. I am not happy since I've had five visits in four months of ownership for major faults. I'm almost to the point of trading it in and taking a loss on it.
I am afraid this proves point 5) of my post above, I have given up the idea of getting hte torque converter substituted, it really sounds like a software logic to me.

I would be interested to know if all of us suffering from this problem have the 4x4 transmission.

Daniele
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  #31  
Old 11-11-2011, 09:17 AM
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Re: Surging/shuddering between 40-60mph in 5.7l

Did yours have this issue since new...start after some miles...get worse over time? My thought are that if it is software/calibration issue then it should be consistant...but in my case, it has gotten worse over time/miles?? maybe more than one issue contributing to it?? I AM SOOOOOOO frustrated with this issue.
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  #32  
Old 11-11-2011, 11:45 AM
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Re: Surging/shuddering between 40-60mph in 5.7l

Quote:
Originally Posted by xc8great View Post
Did yours have this issue since new...start after some miles...get worse over time? My thought are that if it is software/calibration issue then it should be consistant...but in my case, it has gotten worse over time/miles?? maybe more than one issue contributing to it?? I AM SOOOOOOO frustrated with this issue.
I have noticed it from 1000 miles onwards. I have 6000 miles and it has stayed pretty much the same all the while. It might get worse with time, but it is early days for me to say.

At the end of the lease, will say goodbye and get onto a better engineered product. For now, enjoy it as is.

Cheers,

Daniele
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  #33  
Old 11-11-2011, 12:05 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

hi Aussie, who told you about the new software, i asked in eastern motors and they did not know of any new updates...[/QUOTE]

The sales agent who sold me the car was aware of the new software when i complained about the gearbox shift (he said other customers have also complained).

I had a mech/test driver from Jeep Al Ain with me in the car trouble shooting the surge and he mentioned the software for the gear box is expected in Dec.
Fingers crossed.
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  #34  
Old 11-11-2011, 10:07 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

Mine started about 6-8 weeks into owning it (about 3-5k miles in). It has gotten worse and more pronounced the more I drive it.

Quote:
Originally Posted by xc8great View Post
Did yours have this issue since new...start after some miles...get worse over time? My thought are that if it is software/calibration issue then it should be consistant...but in my case, it has gotten worse over time/miles?? maybe more than one issue contributing to it?? I AM SOOOOOOO frustrated with this issue.
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Old 11-11-2011, 10:23 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

Very similar to when it started on mine also. Took it in approx 2,000km for first oil change and informed dealer but it was very slight at that point. Has gotten worse over time and miles with mine also. ZERO help from customer service at Chrysler. The person that looked into it did not care that it did not do this from new, nor did she care that it has gotten worse over time. She informed me this was a "controlled misfire" and is normal!!!!!
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  #36  
Old 02-19-2012, 09:20 PM
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Re: Surging/shuddering between 40-60mph in 5.7l

Quote:
Originally Posted by daniele767676 View Post
So, how does the misfire/surge/shudder sensation manifests itself?

1) In 4th and 5th gear once the torque converter has locked up
2) Whilst accelerating softly enough so that the car does not unlock the torque converter and changes down a gear
3) From 40mph+, between 2000-2500 rpm
4) In all modes, Auto/sport etc, as well as in D or Autostick (when allegedely the MDS is not operational)
5) When driving at 70-80mph, I also get a slight vibration "driving over washboard effect", particularly when driving up a slight incline with the cruise control on.

The technical explanation given to me 3 times now by the service manager who has spent hours in friendly conversations with me:

1) Connecting the laptop to the ODC whilst driving, he could see that under the conditions described above the torque converter keeps locking in/out in succession, within few hundreds of a second

2) This is driven by the MDS software, the MDS needs the torque converter to lock/unlock when engaging/disengaging

3) This command to the torque converter is given also when in Autostick mode, and it exhibits the same behaviour, although the MDS is allegedely not active

4) The issue does not occur in lower gears because the torque converter does not lock up

5) Subsituting the torque converter will not improve things as mechanically there is no slip or any loss in it at all
This is exactly what happens to my 05 model and I can't find a way to fix it. It only started happening around 3 months ago after all those years but it's driving me nuts that I can't find a concrete solution to the problem.

Anyone had a successful fix?
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