2017 & 2018 a8
12-19-2017, 03:36 PM
#2
The problems will persist until they abandon the bone-headed idea that they can let the lock-up clutch in the torque converter constantly slip a little during V4 operation to eliminate pulses in the drive train.
I told my wife, a librarian, how GM engineers had come up with this great way to make the car smoother while it was saving fuel, and told her how the system worked. She said it sounded just like riding the clutch, something her father had told her never to do when she was learning to drive. That proves you don't have to be an automotive engineering genius to see it's a terrible idea.
I told my wife, a librarian, how GM engineers had come up with this great way to make the car smoother while it was saving fuel, and told her how the system worked. She said it sounded just like riding the clutch, something her father had told her never to do when she was learning to drive. That proves you don't have to be an automotive engineering genius to see it's a terrible idea.
12-19-2017, 03:45 PM
#3
Burning Brakes
Thread Starter
My current 2016 does get the slight RPM dance in auto mode, but is very smooth, and has no shudder, vibration etc. I keep it mostly in paddle mode to eliminate the RPM flux. Only have 5k easy miles on it. But it worries me after reading all the other stories. Love the car, and would swx to a comparable 2014 or 2017/18 if I could find one in the same color combo with a HUD and very low mileage, as long as I know the problems been solved.
Last edited by Squeaky Wheel; 12-19-2017 at 03:46 PM.
12-19-2017, 04:19 PM
#4
The fact everyone using an A8 is resorting to paddle mode just shows how crappy the A8 is. There's a reason you're using paddle mode and that's because the automatic mode is a hunk of junk unless you take it in to be fixed by gm. Sure... call me a douche for saying it.... I sometimes get my karma stalling in rush hour once a month.
Last edited by PobreWey; 12-19-2017 at 04:19 PM.
12-19-2017, 04:22 PM
#5
Burning Brakes
Thread Starter
The fact everyone using an A8 is resorting to paddle mode just shows how crappy the A8 is. There's a reason you're using paddle mode and that's because the automatic mode is a hunk of junk unless you take it in to be fixed by gm. Sure... call me a douche for saying it.... I sometimes get my karma stalling in rush hour once a month.
12-19-2017, 04:26 PM
#6
Why a lock-up convertor anyway with 8 speeds? Do you really save that much fuel dropping the rpm a whole 150 RPM in 8th gear?
12-19-2017, 04:42 PM
#7
Burning Brakes
I had the same issue with my 2016 Camaro SS. I chose the M7 in the Stingray this time around. Hopefully the 10-speed auto will be rock solid and make its way into the Corvette soon. From what I see, the 10 speed in the ZL1 and new Mustangs shifts much quicker as well.
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12-19-2017, 04:50 PM
#9
Supposedly to be too big to fit in current platform, otherwise it would likley have been in the new ZR-1. Yeah, the new mustang GT with the 10spd I hear is a bit faster than the GT350?!?
12-19-2017, 04:55 PM
#10
Drifting
The problems will persist until they abandon the bone-headed idea that they can let the lock-up clutch in the torque converter constantly slip a little during V4 operation to eliminate pulses in the drive train.
I told my wife, a librarian, how GM engineers had come up with this great way to make the car smoother while it was saving fuel, and told her how the system worked. She said it sounded just like riding the clutch, something her father had told her never to do when she was learning to drive. That proves you don't have to be an automotive engineering genius to see it's a terrible idea.
I told my wife, a librarian, how GM engineers had come up with this great way to make the car smoother while it was saving fuel, and told her how the system worked. She said it sounded just like riding the clutch, something her father had told her never to do when she was learning to drive. That proves you don't have to be an automotive engineering genius to see it's a terrible idea.
Contrary to popular belief, the A8 is a very good transmission. The problem is in the programming. Using your wife’s analogy (which is very good, by the way,) the clutch in a manual would turn to toast quickly under these circumstances.
I see three solutions:
1) Keep the A8 in manual mode. (I bought an automatic because I don’t want to shift my car manually.)
2) Buy the Range AFM disabler. It looks like they have all the kinks worked out with version 8.6. So, I have to spend $200 to disable a HS system that I didn’t want in the first place.
3) GM gets their $hit together and programs the A8 like the M7, that is AFM in Eco mode only. Forget this option, it make too much sense and doesn’t cost anything.
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911Hunter (12-21-2017)
12-19-2017, 05:35 PM
#13
Burning Brakes
Thread Starter
Mine shifts fine. And it drives fine. Very smooth, no strange noises, vibration etc. Absolutely no clue anything strange is going on, unless you happen to be looking at the tach. Just don’t have confidence it will continue to be problem free.
12-19-2017, 06:15 PM
#14
I find the paddle shifter in my 17 GS to be nothing more than a novelty. I much prefer the “performance shift” in auto. Maybe the paddles are good for the track, but for street driving, no thanks. I don’t like the delayed response. I’m going to buy the range.
12-19-2017, 06:48 PM
#15
Race Director
If an A8 owner and spent any time here you either have an A8 problem, think you have a one or are worried about having one.
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12-19-2017, 06:57 PM
#16
Le Mans Master
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Finalist 2020 C7 of the Year -- Unmodified
^^^^^ very true!
very true!
12-19-2017, 07:06 PM
#17
Burning Brakes
Thread Starter
Curious if you or any of our other owners have had the rpm fluxes with no other indications of a problem, and if so, for how long?
12-19-2017, 07:11 PM
#18
Advanced
I agree. Ever since I started reading about these issues, I feel like my car is doomed even though my 2017 was built in 12/16 and if you look at the statistics, there is a very low likelihood that I should have an issue, it’s just that I obsess over these things. I can’t help it, I’ve been around machinery both large and small my whole life and have gotten used to things failing at one time or another.
12-19-2017, 07:22 PM
#19
Safety Car
I’m kind of starting to think the same. I know I still have over 3 years of warranty and should just relax and enjoy the car. But it’s hard to have confidence in it.
Curious if you or any of our other owners have had the rpm fluxes with no other indications of a problem, and if so, for how long?
Curious if you or any of our other owners have had the rpm fluxes with no other indications of a problem, and if so, for how long?
Last edited by Red C8 of Jax; 12-19-2017 at 07:24 PM.
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