Shifting from 4th to 5th - 2014+ Jeep Cherokee Forums
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post #1 of 29 (permalink) Old 11-21-2016, 06:10 PM Thread Starter
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Shifting from 4th to 5th

Hi Folks. Greetings from Manitoulin Island. ...anyone who has a resolution to this issue I'm having I'd like to hear from you. First of all, I like my 2015 V6 limited AD1 e/w tow pkg. I have 62,000 km on it and for the most part it drives like new. It's the tray. .. . As we know, gears 1-4 are designed and shift like a conventional automatic with 5 thru 9 being of the "dog" clutch variety. On occasion the transitional shift between conventional gear 4 and dog 5 can be so hard it shocks the rear end portion of the drive train so hard with a slam felt thru the entire car. It commonly happens when I let up on the accelerator in 4th, just prior to the upshift to 5th and what should be a rather light duty shift ends up with a "what #@%/ was that??? Up hill or down or on level. It takes a bit of a perfect storm to make it happen. I really like this vehicle and prefer to solve the issue rather than trade it. No codes.... It's the only annoyance I have. All software is up to date. Since I can't always replicate it my dealer is of no help at this point. Appreciate any thoughts...and seasons greetings to all. Thanks.

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post #2 of 29 (permalink) Old 11-21-2016, 09:19 PM
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Originally Posted by Manitoulinman View Post
.... can be so hard it shocks the rear end portion of the drive train so hard with a slam felt thru the entire car. It commonly happens when I let up on the accelerator in 4th, just prior to the upshift to 5th and what should be a rather light duty shift ends up with a "what #@%/ was that??? Up hill or down or on level. It takes a bit of a perfect storm to make it happen. I really like this vehicle and prefer to solve the issue rather than trade it. No codes.... It's the only annoyance I have. All software is up to date. Since I can't always replicate it my dealer is of no help at this point. Appreciate any thoughts...and seasons greetings to all. Thanks.
Unfortunately can't contribute any knowledge on this to help, other than to say you've described it very well and the exact same thing happens with my 9/2014 build.

Since it usually happens in traffic and while letting up on the throttle, as you said, I never have a chance to see what gears are at play. Wouldn't doubt it involves a dog clutch since it feels worse than popping the clutch on a standard shift transmission. Happens so infrequently though (maybe once a month at most) I don't fret about it anymore.
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post #3 of 29 (permalink) Old 11-21-2016, 09:54 PM
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My best advice would be to take it to another dealership and request a test drive with the service tech. Unfortunately if it doesn't happen while the'yre with you, they won't even bother looking further. I've had mine in over 10 times for shifting problems (this was when the updates were still coming out, I have a 2014 build), most of the time they would do a quick 5km drive and park it saying no problem found, otherwise they would put the transmission into adaptive learn mode again and send me on my way. My shift problems mostly occurred with the 1-2 and 2-3 shift, and I'm still having problems with the jerkyness and lag when shifting, but I've given up on trying to fix it.
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post #4 of 29 (permalink) Old 11-25-2016, 12:11 PM
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I have the exact same problem that the OP describes on my 2015 (11/14 build). It happens so infrequently that I doubt it would occur on a test drive at the dealer. I didn't realize until now that this was the dog clutch shift. It might do a harsh shift twice in five minutes then not do it again for a week. It took a while to narrow down which gear was the problem but I'm pretty sure it's the 4-5 shift at about 35 mph and light throttle. This started over the last six months or so.

It's almost like the transmission thinks it's doing a full-throttle shift but doesn't know the engine is at light throttle. Sometimes it's just a little harsh and other times it really bangs into gear. 99% of the time it shifts perfectly. I don't know if my software is up to date as I haven't had the Jeep to the dealer for about a year. The Cherokee has just over 46K miles on it and I'm generally happy with the vehicle.
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Last edited by Dodgeboy; 11-25-2016 at 12:15 PM.
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post #5 of 29 (permalink) Old 11-25-2016, 02:08 PM
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I have yet to experience this: either upshift or downshift. Build date 04/16. I only have a little over 2,000 miles on my TH. Maybe it is waiting to surprise me soon!

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post #6 of 29 (permalink) Old 11-25-2016, 03:05 PM
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.... Maybe it is waiting to surprise me soon!
Maybe not

Seems a lot of people are real happy with the shifting with their 2016+ 9-speeds - - - Generally speaking; I know there are exceptions. Probably took a couple years to get the kinks out.
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post #7 of 29 (permalink) Old 11-25-2016, 08:36 PM
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I have yet to experience this: either upshift or downshift. Build date 04/16. I only have a little over 2,000 miles on my TH. Maybe it is waiting to surprise me soon!


The trick is to very quickly accelerate it to about 50-55MPH, so your RPMs are very high and it never gets to fifth because you're pedal to the metal... then literally take your foot off the gas. You should be at 4500 RPM or more (V6). If it suddenly acts like it has runaway acceleration for a few seconds, then you have experienced the dog clutch effect.


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post #8 of 29 (permalink) Old 11-26-2016, 10:40 AM
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The trick is to very quickly accelerate it to about 50-55MPH, so your RPMs are very high and it never gets to fifth because you're pedal to the metal... then literally take your foot off the gas. You should be at 4500 RPM or more (V6). If it suddenly acts like it has runaway acceleration for a few seconds, then you have experienced the dog clutch effect.


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Thanks--you have given me something to check out on my 2016 as I have never felt any 4th to 5th gear problem and I do accelerate very quickly most of the time. Have to check for that runaway acceleration now and the dog clutch effect.
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post #9 of 29 (permalink) Old 11-26-2016, 10:45 AM
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Quote:
Originally Posted by jeepfan4x4 View Post
The trick is to very quickly accelerate it to about 50-55MPH, so your RPMs are very high and it never gets to fifth because you're pedal to the metal... then literally take your foot off the gas. You should be at 4500 RPM or more (V6). If it suddenly acts like it has runaway acceleration for a few seconds, then you have experienced the dog clutch effect.


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I'll try this and report back!

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post #10 of 29 (permalink) Old 11-29-2016, 06:38 PM
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Same issue here ... happens for me around 40mph. My wife always looks at me and asks "40?"

Seems to happen to me more frequently as time goes on although I can never replicate it at will. I'll try the process @jeepfan4x4 described and see if i can make it happen. Then it's off to the dealer.

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