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  #121  
Old 11-23-2010, 08:50 AM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

They flashed the module and orderd the isolator for the front, once that arrives they will change it out and we will see what happenes. The flash seemed to help but now it seems to have a harder kick down at about 40MPH. I was in traffic on the way to work so it was difficult to really drive it beyound stop and go to see how it was performing.
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  #122  
Old 11-23-2010, 10:05 AM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

I believe that after any reflash, the transmission will still need to "re-learn" how to shift based on your driving style, due to the battery being disconnected during the reflash process.

Also from the owners manual:
"NOTE: The MDS system may take some time to return to full functionality after a battery disconnect."

Hope it smoothes out for you after you get some mileage on it for "learning purposes".
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  #123  
Old 12-18-2010, 05:54 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

Hi All,

Just wondering, has anyone had this successfully resolved? Anyone with an October or a November build date have this issue appear after break-in?

I ask because my Overland Hemi is a November Build date with 1200 miles on it. Earlier this week I was traveling through the Berkshire's on the Mass Turnpike heading up over the long hill. On this long steady incline I noticed that from 60mph to 75 mph when either maintaining my speed or accelerating in top gear the car is doing something along the lines of what is described in this thread. Something feels off when accelerating in the 1,000 - 2,200 rpm range. I think the best way to describe it is that feels like a miss in the engine. If I push the accelerator and force a downshift it seems to go away. Is this the shudder everyone is referring to? Again, mine is a November build so I am not sure if that means it is something else?

Since then I have started to pay attention to this a little more on level ground versus on hilly terrain. Under harder acceleration in lower gears the car seems to be ok, but when accelerating with less urgency (in this instance the ECO light is NOT on) I swear I can feel a slight lunge in any gear. I don't know if bucking or lunging is the right word because it's not that severe. It just catches me off guard all the time. I had someone else drive the car and I asked them to describe how it feels without prompting them. He said it feels like a miss. The car has also started shifting a little rougher. Between the first four gears it feels like the engine kind of disengages and re-engages during each shift. I've never had an automatic transmission before, but I'm not used to that. It almost reminds me of a manual transmission, but the engagement is kind of abrupt. Sometimes it seems to go into 5th (or overdrive) with a clunk. On this same trip (before reaching I-90) I moved out to pass a slow car and had to floor it to make this happen. I was traveling at about 45mph and when I did this the car seemed to downshift gears properly but the engine seemed to hesitate (I am not sure if sputter would be the right description?) before it took off (and then it REALLY took off!). I can reproduce this about 50% of the time, the others it performs flawlessly.

So, I called the dealer and scheduled an appointment for next Tuesday. They asked if I was experiencing this between 40 and 60 mph. I told them I could feel it from 35mph up to 75mph. I swear sometimes I can feel it in low gears under light acceleration. Having read this thread and based on the questions the service guy asked I expected them to say it was the "shudder." They said that I could be experiencing the MDS activating and de-activating. I can tell the difference, and as I said the Eco light is not on. Also, when the Eco light is on the lunge seems to go away and I hear the 4cylinder buzz (which is fine). When I told them this, they also said that the transmission and torque converter have a 6,000 mph break-in cycle. They said that this transmission has 1st, 2nd, 3rd, 4th, 4th w/ lockup, and then 5th. They said I could be experiencing the torque converter going between lock-up modes. Regardless, they agreed to look at it. I am going to write all of this out for them and document it when I drop it of.

In the meantime, anything I should try on my own or look for? I have said on previous posts I am new to Chrysler products so I don't know what the usual things are to consider. This is also my first automatic transmission so I don't know what is normal during the first few thousand miles and what is not. I am probably also a little paranoid as this is my first new car in a while so I am trying to make sure I do everything right. I want it to last a long time.

One thing I was thinking of is I had many Honda's with VTEC's and I recall feeling thuds and cam movement as computer changed the Valve Timing and lifters to optimize performance. I know this thing has the VVT so I was also wondering if the engine is trying to re-optimize everything now that I am through a break-in cycle and driving more normal?

Anybody else have something like this happen and then go away after a couple thousand miles of driving?

I am open to thoughts and suggestions. If I am being too paranoid you can tell me that too. I can take it!

Thanks for any insight you guys can offer!
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  #124  
Old 12-19-2010, 11:59 AM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

Quote:
Originally Posted by litespeedz View Post
Hi All,

Just wondering, has anyone had this successfully resolved? Anyone with an October or a November build date have this issue appear after break-in?

I ask because my Overland Hemi is a November Build date with 1200 miles on it. Earlier this week I was traveling through the Berkshire's on the Mass Turnpike heading up over the long hill. On this long steady incline I noticed that from 60mph to 75 mph when either maintaining my speed or accelerating in top gear the car is doing something along the lines of what is described in this thread. Something feels off when accelerating in the 1,000 - 2,200 rpm range. I think the best way to describe it is that feels like a miss in the engine. If I push the accelerator and force a downshift it seems to go away. Is this the shudder everyone is referring to? Again, mine is a November build so I am not sure if that means it is something else?

Since then I have started to pay attention to this a little more on level ground versus on hilly terrain. Under harder acceleration in lower gears the car seems to be ok, but when accelerating with less urgency (in this instance the ECO light is NOT on) I swear I can feel a slight lunge in any gear. I don't know if bucking or lunging is the right word because it's not that severe. It just catches me off guard all the time. I had someone else drive the car and I asked them to describe how it feels without prompting them. He said it feels like a miss. The car has also started shifting a little rougher. Between the first four gears it feels like the engine kind of disengages and re-engages during each shift. I've never had an automatic transmission before, but I'm not used to that. It almost reminds me of a manual transmission, but the engagement is kind of abrupt. Sometimes it seems to go into 5th (or overdrive) with a clunk. On this same trip (before reaching I-90) I moved out to pass a slow car and had to floor it to make this happen. I was traveling at about 45mph and when I did this the car seemed to downshift gears properly but the engine seemed to hesitate (I am not sure if sputter would be the right description?) before it took off (and then it REALLY took off!). I can reproduce this about 50% of the time, the others it performs flawlessly.

So, I called the dealer and scheduled an appointment for next Tuesday. They asked if I was experiencing this between 40 and 60 mph. I told them I could feel it from 35mph up to 75mph. I swear sometimes I can feel it in low gears under light acceleration. Having read this thread and based on the questions the service guy asked I expected them to say it was the "shudder." They said that I could be experiencing the MDS activating and de-activating. I can tell the difference, and as I said the Eco light is not on. Also, when the Eco light is on the lunge seems to go away and I hear the 4cylinder buzz (which is fine). When I told them this, they also said that the transmission and torque converter have a 6,000 mph break-in cycle. They said that this transmission has 1st, 2nd, 3rd, 4th, 4th w/ lockup, and then 5th. They said I could be experiencing the torque converter going between lock-up modes. Regardless, they agreed to look at it. I am going to write all of this out for them and document it when I drop it of.

In the meantime, anything I should try on my own or look for? I have said on previous posts I am new to Chrysler products so I don't know what the usual things are to consider. This is also my first automatic transmission so I don't know what is normal during the first few thousand miles and what is not. I am probably also a little paranoid as this is my first new car in a while so I am trying to make sure I do everything right. I want it to last a long time.

One thing I was thinking of is I had many Honda's with VTEC's and I recall feeling thuds and cam movement as computer changed the Valve Timing and lifters to optimize performance. I know this thing has the VVT so I was also wondering if the engine is trying to re-optimize everything now that I am through a break-in cycle and driving more normal?

Anybody else have something like this happen and then go away after a couple thousand miles of driving?

I am open to thoughts and suggestions. If I am being too paranoid you can tell me that too. I can take it!

Thanks for any insight you guys can offer!
What you are feeling is the torque converter locking up.
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  #125  
Old 12-19-2010, 09:31 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

This is exactly the symptom. Problem is it actually gets worse the more miles you put on the truck. Mine started about 1500 miles, and I now have 7000 on it. It bucks now to the point that I do not drive it any time other than going to work. that is a freeway drive, so I don't notice it much. When I do drive it around town, I want to point it at a telephone pole. Those of you that have been waiting months upon months for delivery of your Grand, take that as a sign. Run the other way until this truck is sorted out.
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  #126  
Old 12-20-2010, 03:37 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

Did they say if they looked at your torque converter? My boss said he had a Honda which did the same thing from day 1 and got progressively worse. At 39,000 miles they identified that his torque converter needed to be replaced.

I plan on documenting my complaint when I drop the car off and will keep a record of their response.
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  #127  
Old 12-20-2010, 05:51 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

It will be interesting when the final fix comes out, what build dates will be affected. I love how the liftgate and water TSBs affect builds from months ago, meaning they have fixed the problem for months at the factory before issuing the TSB. I hope by December build will be protected from this horrible shudder issue....
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  #128  
Old 12-20-2010, 08:33 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

I had no idea what a torque converter was until tonight. Is the torque converter in the WK2 different from what they have used in other vehicles? How big a deal is it to replace? Do you have to drop the entire transmission? When we took our Suburban in for warranty work on the engine recently, they gave us a loaner vehicle. Will the dealer provide a loaner/rental for this type of work if our Jeep needs it?
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  #129  
Old 12-21-2010, 07:46 AM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

I asked about loaner vehicles before I bought it. I think it is dealer specific. But they told me they would find something for me to drive if I had to bring it in for a day. If it is an hour fix, the said they would ask me to wait or drop it off.

In terms of the torque converter, I'm not really sure. I'm only asking questions about it based on feedback from the service manager I talked to on the phone, and from similar symptoms my boss' wife's Odyssey exhibited. I'm not even suggesting it is the issue, but based on what the Service manager told me I am just curious if anybody else had it looked at. Because to be honest, I have a hard time believing it is the torque converter, but he was so adamant that just locking up in top gear. Why it locks and "un-locks" so frequently I don't know yet. Maybe it is struggling to learn my true driving style after break-in.

I had to move my appointment to Thursday afternoon. I won't know more until then. But I plan on asking the service guy if I can go with him when he drives it so I can make sure he gets the car to do it. At the very least, my goal is to get them to agree it is doing it and that it is not normal for any car. Even if they tell me I have to wait for the Transmission break-in period to be over at least I will have a paper trail.

I'll post feedback then. Still just wondering if anyone has had this issue smooth out over more miles? I would think that if it was getting worse (or staying the same) there would be LOTS more negative posts on here. No feedback leads me to believe people are happier.
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  #130  
Old 12-21-2010, 09:14 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

For what it's worth I have been trying to accelerate more smoothly and consistently with the Jeep this week. When I get to an incline and push the accelerator gently to compensate it is still holding a gear and seems to be smoothing out. I still feel this slight recurring "hesitation" but it is becoming more subtle. But once in a while something still thunks. I am going to take it in just to be sure something isn't wrong, or I'm not driving the car weird.

Regardless of this little issue, this car still puts a smile on my face. I love driving this thing!
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  #131  
Old 12-21-2010, 11:19 PM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

I had this exact problem on a 1996 Chevy Malibu (back in 96). I swore I'd never buy American again, and here I am waiting on a WK2 years later. If I have this problem I will drive off a cliff
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Old 12-22-2010, 09:49 AM
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Re: Did Shudder TSB fix a problem? 2011 Shudder problems thread

Quote:
Originally Posted by bozer View Post
I had this exact problem on a 1996 Chevy Malibu (back in 96). I swore I'd never buy American again, and here I am waiting on a WK2 years later. If I have this problem I will drive off a cliff
...with the car full of babies!!!!!
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