Tlnt60

Hey guys looking for some input here on 2012 coupe. So basically when the car is in any mode with traction on/sport it will “slip” and catch when I’m under partial throttle. And by slip I mean the rpms will jump up 300-600 and then it catches and goes, it’s the most noticeable when I’m crushing and I give it a little extra throttle to speed up (not enough to downshift to lower gear). It does it in 3-5, but it’s possible I don’t notice it in the lower gears cause of the ratios in the MCT. Under full throttle/load it doesn’t seem to do it.

I have tried the TCU reset, and disconnected my battery for 24 hours, both have done nothing to fix this.

The car is going into the dealer on Monday, but was hoping to see if anyone else had similar issues and the outcome.

TIA.

MTV10

Mine is a little slippy sometimes on the 3-4 shift. This is under partial load, simply cruising. I just hit 50k KM's and am planning on changing the tranny fluid soon. We will see if that solves it.

Tlnt60

And I wondered if that has something to do with it. I will ask the dealer. I just want to go in with as much info as possible. The car currently has 54k miles on it.

roadkillrob

Has it ever had the fluid changed it was due at 40k and these transmissions don�t seem to like dirty fluid.

Tlnt60

Yes, all services due were done on time. Trans flush happed at the dealer at 40k miles.

roadkillrob

Good luck, hopefully it is something simple.

MTV10

I've also read other members experiencing a slight slip going from R to D. I have experienced this as well and when it catches, it clunks into gear.

bentz69

Do you have a tune?

Tlnt60

Yes I have a dyno tune. But have had the tune for almost 2 years. This started about a week ago

bentz69

Well that's totally different. Hope its nothing serious..... I've had slight rpm flaring/surging (whatever you want to call it) on the 2-3, 3-4 since I had the tune installed.

ItalianJoe1

Sounds like the torque converter/clutch is slipping if it's when you describe, only at lighter pressures. Agree on checking fluid first.

If you have a harsh shift from P-R-D (garage shift), the issue is usually with the gear position sensor in the conductor plate. Common failure item on the 722.9 still.

Tlnt60

I usually let the car warm up in the morning before heading out, but that’s absolutely a possibility. By chance, do you know cost/level of intervention required if this is the issue.

Tlnt60

Ok so an update. The car went to the dealer. They ran all their diagnostics and updates the software in the trans, but the car is still slipping. They can’t find anything wrong. They basically told me to keep driving the car as it is and come back if something comes up. I’m kinda at a loss on this one. The only other thing that I mentioned to them was that someone on the forums had suggested using DAS to reteach the “kiss point” on the clutch. The shop Forman thought that that wouldn’t make a difference so he suggested that I not spend the money to do it.

Any thoughts???

Cli63

Have you tried an adaption reset?

ItalianJoe1

If you paid for a diag, they should re-learn all the adaptations as part of the diagnostics...

Tlnt60

Yes, they reset the adaptations, and did a software update. The “kiss point” relearn is something different. From what I read it’s when the clutch engages the gear. I will make a video of what the car is doing and post it.

Diabolis

Here's another possibility - you tuned it with a more aggressive, snappy tune that over the course of two years has now worn down the MCT clutches to the point where you're starting to notice some slip...

mwetter

I have a 2012 with about 50k miles and have been trying to track down what I think is the same issue. My car is 100% stock. Trans fluid changed at 40k.The best way I can recreate the situation is putting the car in Manual 5th gear at around 1800 rpm and then give it 10% throttle increase. The rpms will jump to 2200 and then back to 1800 before the car accelerates. If I drive aggressively, it does not happen. Can’t detect any “slip” at full throttle acceleration. That makes me think it is not true clutch slip, but rather the computer being “confused” and maybe not getting cam timing correct. That is a guess as I don’t really have any idea what the computers are doing. It just feels more like a “VTech” change gone bad than a physical problem. Sorry for the Honda reference...

Tlnt60

Yes, this is exactly what’s happening to me. Did you get yours looked at to see what it was?

mwetter

Not yet. I read elsewhere about a similar situation that was solved by correcting the amount of trans fluid. Evidently, the fill until it flows out method can be wrong if the car is not perfectly level and you end up too low on fluid once the car is on the ground. I am going to test that theory as it seems simple and cheap.

Celicasaur

Any of you any closer to solving this one?

I've noticed with the recent freezing weather here, the tranny really doesn't like being cold and it needs loads of revs to get the car to move either in D or R, off the driveway and out onto the roads for several minutes. I normally baby the car anyway during this period, but after that, it's fine.

Have a I just answered my own question, or am I seeing some age-related symptoms because it just doesn't seem like to like being woken up at freezing temps? (0 degree's C)

ItalianJoe1

Don't know on this car specifically, but in general, that type of issue is hardened seals from age, they soften up with heat and start sealing. If the seals on the solenoids are leaky when cold, it will act as described and improve as temperatures come up. How old is the fluid in your car? If it's more than 3-4 years, change it out and see if it helps.

Celicasaur

Hmmm....see, I had all 8 solenoids replaced for new 2 years ago/~10k miles ago...surely it can't be the solenoids. The fluid therefore is also pretty recent.

I think i'll just take it out for a drive now and see how I feel about it as the car warms up and I'll report back. I want to get a bigger final drive gear programmed into the tranny, but i don't want to do that if the tranny is about to die on me. Hmm...

Tlnt60

So an update on the car.

Took it to the dealer and turned out to be a bad valve body. They replaced it and as they were setting the adaptations they also noticed a IM vacuum leak (common issue). They are finishing up the car and I will pick it up today. Luckily my 3rd party warranty covered everything expect the fluids so total out of pocket is $330.

bentz69

Good to here. Curious, what warranty company?