Jerky automatic transmission shifting

While that is concerning, and I will have my dealer look into it at my next service, please keep us informed if that changes anything in the behavior of the shifting. It may just be a coincidence, but we all want to know.

Dealership just called. Kia confirmed their diagnosis of a cracked seal. However, Kia is debating whether to replace the seal or the entire transmission. Basically, they want to see that seal in context and determine what went wrong. Either way, I'll eventually get a loaner.
 
Dealership just called. Kia confirmed their diagnosis of a cracked seal. However, Kia is debating whether to replace the seal or the entire transmission. Basically, they want to see that seal in context and determine what went wrong. Either way, I'll eventually get a loaner.

So now the dealer says the seal is okay. They suspect the transmission overheated and leaked fluid. Which actually doesn't explain why the dealer found water in the transmission fluid earlier. The dealer is installing a new transmission next week.

I have to admit that I'm getting concerned about whether the dealer made a mistake. Shouldn't the transmission have an idiot light if it overheats? What would cause the transmission to overheat?
 
So now the dealer says the seal is okay. They suspect the transmission overheated and leaked fluid. Which actually doesn't explain why the dealer found water in the transmission fluid earlier. The dealer is installing a new transmission next week.

I have to admit that I'm getting concerned about whether the dealer made a mistake. Shouldn't the transmission have an idiot light if it overheats? What would cause the transmission to overheat?

Yes, it would go into limp mode.
 
______________________________
So now the dealer says the seal is okay. They suspect the transmission overheated and leaked fluid. Which actually doesn't explain why the dealer found water in the transmission fluid earlier. The dealer is installing a new transmission next week.

I have to admit that I'm getting concerned about whether the dealer made a mistake. Shouldn't the transmission have an idiot light if it overheats? What would cause the transmission to overheat?
At least you are getting a new transmission so that can give you some piece of mind. I do think if the transmission over heated some kind of dash notification would have came on though
 
So now the dealer says the seal is okay. They suspect the transmission overheated and leaked fluid. Which actually doesn't explain why the dealer found water in the transmission fluid earlier. The dealer is installing a new transmission next week.

I have to admit that I'm getting concerned about whether the dealer made a mistake. Shouldn't the transmission have an idiot light if it overheats? What would cause the transmission to overheat?

sounds like they can't really figure out the problem so they're just giving you a whole new transmission. I like that (when under warranty), I've seen dealerships screw around trying to fix a problem they couldn't figure out for months. Their techs shouldn't have any issues doing a simple transmission swap out, it isn't that complicated.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
And it was a simple swap. The transmission arrived Friday, they swapped out the transmission, and today, Monday, the dealership drove the car to my house and picked up the loaner. I can't wait to take her for a spin later this week. ☺️
 
Last edited:
Well? Is it?
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Also interested :rofl:

In what? I corrected the typo in my original post. I ignore members who've engaged in appropriate behavior in these forums in the past. You'll have to explain whatever inappropriate personal, classist or sexist comment was posted.
 
In what? I corrected the typo in my original post. I ignore members who've engaged in appropriate behavior in these forums in the past. You'll have to explain whatever inappropriate personal, classist or sexist comment was posted.
Nothing was intended but my edumacayshun. I am behind the curve in modern abuse of the Mother Tongue. So "freaked", used in the context of delivering a car, probably has a new meaning. "Words mean things" is a phrase also going rapidly out of vogue: since corruption of original meaning is ongoing. Why I care to know if yet another word has obtained a new "definition" among particular subsets of society is more to do with weary curiosity than anything else.
 
Nothing was intended but my edumacayshun. I am behind the curve in modern abuse of the Mother Tongue. So "freaked", used in the context of delivering a car, probably has a new meaning. "Words mean things" is a phrase also going rapidly out of vogue: since corruption of original meaning is ongoing. Why I care to know if yet another word has obtained a new "definition" among particular subsets of society is more to do with weary curiosity than anything else.

It also helps explain why you have 2,800+ messages on here just since June... ;)
 
It also helps explain why you have 2,800+ messages on here just since June... ;)
Lol. Yeah, I have explained before, how this forum is a distraction from certain Real Life concerns, and a great way, therefore, to spend a chunk of time each day. You are a great bunch. :thumbup:
 
So to anyone who cares, I just did some investigating. From what I have found, it seems that for almost everyone complaining about rough shifting it is typically something to do with 3rd and 5th gear shifts. Well, after watching a video about the transmission to research a hunch I had, I discovered that 3rd and 5th gear do share a common gearset (not the entire gearset, but one piece out of the two that make up a gear ratio). So this confirmed what I suspected, or hoped. Butttt, what I then discovered after this, is that same portion, or we can call it a ring, is shared with exactly one other gear, and that one other gear is perhaps the culprit. It is reverse. So, and this is only stipulation and inference from having worked on transmissions before, my guess is that the clutch or engagement device for that specific ring has to work harder than the rest, as any reverse gear engagement device must, and therefore the timing for 3rd and 5th gear shift engagement is just ever so slightly longer than the rest. A cold transmission may accentuate the issue, but I would guess that this slightly longer engagement is what causes these particular shifts to feel less smooth than the rest. So while I could be totally wrong here, I think this just may be an inherent characteristic of the transmission.

 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
My first to second gear banging issue (V-6) is getting alarming. It went from an occasional misstep to a regular feature in a few hundred miles. NOT tolerable for a $50K car- or any car, for that matter. I will be calling my dealer to set up an appointment after the holidays. There are no issues with other gear changes, and it is not a matter of smoothness. It is a positive slap that bodes ill for the longevity of the trans, IMO.
 
______________________________
My first to second gear banging issue (V-6) is getting alarming. It went from an occasional misstep to a regular feature in a few hundred miles. NOT tolerable for a $50K car- or any car, for that matter. I will be calling my dealer to set up an appointment after the holidays. There are no issues with other gear changes, and it is not a matter of smoothness. It is a positive slap that bodes ill for the longevity of the trans, IMO.
Let us know how it goes! I'm a little concerned about a hard downshift in certain situations but I don't know what gear and it's hard to replicate. I'm debating talking to the dealership, but for now my concern about the rougher 4th to 5th upshift in sport mode is lessened.
 
My first to second gear banging issue (V-6) is getting alarming. It went from an occasional misstep to a regular feature in a few hundred miles. NOT tolerable for a $50K car- or any car, for that matter. I will be calling my dealer to set up an appointment after the holidays. There are no issues with other gear changes, and it is not a matter of smoothness. It is a positive slap that bodes ill for the longevity of the trans, IMO.

I get this on cold start and low speed. Kind of just CLUNKS from 1-2.
 
7,100 miles.

The transmission feels like it is slipping on upshifts. There is a hesitation, followed by RPM surge, followed by shift and lower RPM. Downshifting while decelerating (not in manual mode) can also be jerky. These all occur in comfort mode and don't appear to be cold/warm driveline related.

Something doesn't seem right. I'll have it looked at for the next service appointment. But I won't hold my breath because they did not work on the rear fade issue since they "could not duplicate the problem" which I did not think was a prerequisite for SA/TSB repairs.
 
13,000 KM, exactly what was mentioned above. 1st to 2nd is rough and have a rev spike. I also had park fail on me last night. After going into park in my driveway it rolled backwards. Dealer cant figure either because they cant reproduce it
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Back
Top