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-   -   Shifting delay and sputtering up hills (http://www.jeepgarage.org/f107/shifting-delay-and-sputtering-up-hills-38523.html)

mighunter 03-07-2012 08:41 PM

Shifting delay and sputtering up hills
 
I have a 2012 jeep grand Cherokee overland with a v8 hemi. It has less than 5k miles. I'm having a few issues:
1. There is a long pause when shifting from 1st to 2nd and then to 3rd. Long in that I've never been in a car that takes that long to shift.
2. At low speeds, especially up a slight incline or on an on-ramp where you just have your foot barely on the gas, the engine surges. The tach is at 1000 rpm and I can see the needle bouncing up and down a bit.
3. When driving up a hill on the highway I feel the engine almost misfiring or sputtering. Initially thought it was the gas but I've tried every grade with no change. I can feel it through the seat.

Dealer supposedly updated some software but still having theses issues.

Anyone having similar experiences and if so what are the fixes?

MikeON 03-08-2012 05:23 PM

Re: Shifting delay and sputtering up hills
 
My 2012 Limited with 5.7 has issue number 3 in your list. I haven't yet talked to the dealer about it, but will do so soon. I'm not expecting a quick fix, because quite a few Jeep owners on this forum seem to have the same problem and are being told that no fix is available so live with it.

mighunter 03-08-2012 09:15 PM

Re: Shifting delay and sputtering up hills
 
Mike please let me know how you make out

nek121328 03-08-2012 10:57 PM

Re: Shifting delay and sputtering up hills
 
The 8 speed transmission might help us with the HEMI!

BlueLodge400 03-09-2012 11:43 AM

Re: Shifting delay and sputtering up hills
 
The next few times you fill up at the gas station, use 91+ octane. I had the same promblem when I let my sister borrow my Porsche turbo and filled it up with 87 when she retuned it.
It's not much more $ a tant to use 91, we might as well put in good fuel.

wjs81866 03-09-2012 05:21 PM

Re: Shifting delay and sputtering up hills
 
I have had this problem with my Laredo Hemi, dont know why. Has 24,000 miles on it. Just like yours, not sure what to do. Dealer did update last year but it didn't help. Its not bad and I really don't think about it now. My wife's does it too. Maybe they will come up with another update.

J13ntv 03-09-2012 10:10 PM

Re: Shifting delay and sputtering up hills
 
Yep mines a 2011, has the tach surging sometimes, and also shudders/misfires whatever you want to call it from 40+ (essentially OD gear) when you let off the gas, and then hold your speed, especially up a slight incline. Talk on the forums from a few who have brought it in to dealers are thats its MDS related and the torque converter, "normal" operation junk.

mighunter 03-13-2012 08:27 PM

Re: Shifting delay and sputtering up hills
 
So basically you're saying there is no fix? The other thing that is happening is that I feel a slight bump or thump as I accelerate in first gear. It isn't every time but often. I saw someone describe it as something hitting the back of the trunk when accelerating. Finally, there has been two occasions where I started the truck and it lurched forward a bit. Anyone have that issue?

MikeD 03-13-2012 09:03 PM

Re: Shifting delay and sputtering up hills
 
Quote:

Originally Posted by mighunter (Post 593127)
So basically you're saying there is no fix? The other thing that is happening is that I feel a slight bump or thump as I accelerate in first gear. It isn't every time but often. I saw someone describe it as something hitting the back of the trunk when accelerating. Finally, there has been two occasions where I started the truck and it lurched forward a bit. Anyone have that issue?

According to the tech at my dealership the thump is normal as I brought mine in for that problem. I finally traded my Jeep in last month and cannot be happier about it, I couldn't accept that all these drivability issues were "normal".

peckmv 03-14-2012 10:25 AM

Re: Shifting delay and sputtering up hills
 
Quote:

Originally Posted by mighunter (Post 589026)
I have a 2012 jeep grand Cherokee overland with a v8 hemi. It has less than 5k miles. I'm having a few issues:
1. There is a long pause when shifting from 1st to 2nd and then to 3rd. Long in that I've never been in a car that takes that long to shift.
2. At low speeds, especially up a slight incline or on an on-ramp where you just have your foot barely on the gas, the engine surges. The tach is at 1000 rpm and I can see the needle bouncing up and down a bit.
3. When driving up a hill on the highway I feel the engine almost misfiring or sputtering. Initially thought it was the gas but I've tried every grade with no change. I can feel it through the seat.

Dealer supposedly updated some software but still having theses issues.

Anyone having similar experiences and if so what are the fixes?

These problems are the norm among us JGC owners. Chrysler is not doing anything about it and they are calling it normal. No gas grade change or change of any part is going to "fix" it. It is a design flaw that you have to learn to live with or get rid of your JGC and go with something that was engineered better. The only hope is that an aftermarket company will develop a performance chip that changes the shift points to stop these symptoms. It was designed this way to get the gas mileage numbers to satisfy the government gas mileage regulations. Thank your elected reps in November if you don't agree with thier decisions.:cool:

BobsWK2 03-14-2012 07:58 PM

Re: Shifting delay and sputtering up hills
 
Quote:

Originally Posted by peckmv (Post 593444)
These problems are the norm among us JGC owners. Chrysler is not doing anything about it and they are calling it normal. No gas grade change or change of any part is going to "fix" it. It is a design flaw that you have to learn to live with or get rid of your JGC and go with something that was engineered better. The only hope is that an aftermarket company will develop a performance chip that changes the shift points to stop these symptoms. It was designed this way to get the gas mileage numbers to satisfy the government gas mileage regulations. Thank your elected reps in November if you don't agree with thier decisions.:cool:

My GC doesn't suffer from any of those problems.

peckmv 03-14-2012 08:03 PM

Re: Shifting delay and sputtering up hills
 
Quote:

Originally Posted by BobsWK2 (Post 593809)
My GC doesn't suffer from any of those problems.

Your lucky.:D


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