that's what I get for posting before my morning coffee.
A8 question
Race Director
Joined: Apr 2017
Posts: 13,602
Likes: 12,864
From: Virginia
You may get better response posting this in the C8 forum.
https://www.corvetteforum.com/forums...iscussion-175/
https://www.corvetteforum.com/forums...iscussion-175/
Melting Slicks
Joined: Jun 2017
Posts: 2,568
Likes: 1,183
From: Conyers Georgia
You may get better response posting this in the C8 forum.
https://www.corvetteforum.com/forums...iscussion-175/
https://www.corvetteforum.com/forums...iscussion-175/
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Race Director
Joined: Apr 2017
Posts: 13,602
Likes: 12,864
From: Virginia
OP, are you experiencing any other of the below A8 converter issue systems?
(1) - Surging and Lugging - Your car can't seem to maintain constant speed.
(2) - Shuddering - Feels like you are running over a rough road when you are on a smooth road. Comes and goes without warning.
(3) - Vehicle Lurches
(4) - Slow to go into gears including reverse.
(5) - Gears don't shift easy.
(6) - Strange Noises - Clicking or revving.
(7) - Gears Slipping - Loss of acceleration.
(8) - Overheating.
(9) – RPMs jumping up and down slightly at constant highway speed.
(1) - Surging and Lugging - Your car can't seem to maintain constant speed.
(2) - Shuddering - Feels like you are running over a rough road when you are on a smooth road. Comes and goes without warning.
(3) - Vehicle Lurches
(4) - Slow to go into gears including reverse.
(5) - Gears don't shift easy.
(6) - Strange Noises - Clicking or revving.
(7) - Gears Slipping - Loss of acceleration.
(8) - Overheating.
(9) – RPMs jumping up and down slightly at constant highway speed.
Last edited by Kevin A Jones; Jul 4, 2020 at 11:23 AM.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Melting Slicks
Joined: Jan 2004
Posts: 2,299
Likes: 387
From: Fort Worth TX
St. Jude Donor '14-'15
Are we talking early C7 like 2015 or early 2016 production and is it between gears (first and second) going slow like in a parking lot or going around a corner??? If so, then just one of the quarks of the early A8's. Your next issue will be "Garage Shift".....that's when you put it in gear first thing in the morning and it takes about 5 seconds for the TQ to fill and then BANG, it leaches forward chirping the tires and placing your head in the back seat!.....lots of fun!
Enjoy the ride.
Enjoy the ride.
Thread Starter
Drifting
Joined: Oct 2009
Posts: 1,385
Likes: 85
From: San Diego CA.
You may get better response posting this in the C8 forum.
https://www.corvetteforum.com/forums...iscussion-175/
https://www.corvetteforum.com/forums...iscussion-175/
Melting Slicks
Joined: Feb 2020
Posts: 2,073
Likes: 1,306
From: Midwest
Ding Ding Ding Da Ding Ding Ding! We have a winner! The A8 was failed before they even started producing it. Defective by design. Back in 2015 I would be driving and the car would just start revving the transmission would just fully disconnect from the rear wheels then all of a sudden it would drop in with a huge bang and forward lurch. That transmission is a ticking time bomb.
Last edited by MagicGlass; Jul 4, 2020 at 12:49 PM.
Thread Starter
Drifting
Joined: Oct 2009
Posts: 1,385
Likes: 85
From: San Diego CA.
Ding Ding Ding Da Ding Ding Ding! We have a winner! The A8 was failed before they even started producing it. Defective by design. Back in 2015 I would be driving and the car would just start revving the transmission would just fully disconnect from the rear wheels then all of a sudden it would drop in with a huge bang and forward lurch. That transmission is a ticking time bomb.
Melting Slicks
Joined: Jun 2017
Posts: 2,568
Likes: 1,183
From: Conyers Georgia
Thread Starter
Drifting
Joined: Oct 2009
Posts: 1,385
Likes: 85
From: San Diego CA.
Sorry guys. I just now saw these replies. The car is a 2019 GS that’s nearly stock. Just bolt ons. The car has 20k miles. I’ve never have a TQ go bad. Is this what they do? I have a Range and I never use eco mode. I guess just some bad luck.
Thread Starter
Drifting
Joined: Oct 2009
Posts: 1,385
Likes: 85
From: San Diego CA.
OP, are you experiencing any other of the below A8 converter issue systems?
(1) - Surging and Lugging - Your car can't seem to maintain constant speed.
(2) - Shuddering - Feels like you are running over a rough road when you are on a smooth road. Comes and goes without warning.
(3) - Vehicle Lurches
(4) - Slow to go into gears including reverse.
(5) - Gears don't shift easy.
(6) - Strange Noises - Clicking or revving.
(7) - Gears Slipping - Loss of acceleration.
(8) - Overheating.
(9) – RPMs jumping up and down slightly at constant highway speed.
(1) - Surging and Lugging - Your car can't seem to maintain constant speed.
(2) - Shuddering - Feels like you are running over a rough road when you are on a smooth road. Comes and goes without warning.
(3) - Vehicle Lurches
(4) - Slow to go into gears including reverse.
(5) - Gears don't shift easy.
(6) - Strange Noises - Clicking or revving.
(7) - Gears Slipping - Loss of acceleration.
(8) - Overheating.
(9) – RPMs jumping up and down slightly at constant highway speed.
Team Owner
Joined: Sep 2000
Posts: 25,007
Likes: 2,707
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Lots of strange interactions between all the electronics.
Another possibility- if the car is in Drive and you get on the gas hard for a couple of seconds, the tranny thinks you are suddenly acting like a racer and it will avoid upshifting for a few seconds after you get off the gas. It feels like something is wrong if you're not used to it. I have not tried getting back on the gas during that pause before upshift.
Does your A8 have the latest fluid (Jan 2019 or thereabouts)? If it has the old fluid, you get a free flush with the new stuff, just by asking.
With the new fluid, the A8 has been working well for most people. We have about 20 of them in our club ranging from 2015 to 2019, most people are very pleased and have had no problems or minor problems fixed quickly. We've got 30k miles on our 2017 A8, works good but we got the new fluid last year just as a prevention.
Last edited by Gearhead Jim; Jul 4, 2020 at 03:28 PM.
Thread Starter
Drifting
Joined: Oct 2009
Posts: 1,385
Likes: 85
From: San Diego CA.
If practical, I'd start by putting everything back to stock and see what happens. That would be more important if the problems started soon after you did the mods or installed the Range.
Lots of strange interactions between all the electronics.
Another possibility- if the car is in Drive and you get on the gas hard for a couple of seconds, the tranny thinks you are suddenly acting like a racer and it will avoid upshifting for a few seconds after you get off the gas. It feels like something is wrong if you're not used to it. I have not tried getting back on the gas during that pause before upshift.
Does your A8 have the latest fluid (Jan 2019 or thereabouts)? If it has the old fluid, you get a free flush with the new stuff, just by asking.
With the new fluid, the A8 has been working well for most people. We have about 20 of them in our club ranging from 2015 to 2019, most people are very pleased and have had no problems or minor problems fixed quickly. We've got 30k miles on our 2017 A8, works good but we got the new fluid last year just as a prevention.
Lots of strange interactions between all the electronics.
Another possibility- if the car is in Drive and you get on the gas hard for a couple of seconds, the tranny thinks you are suddenly acting like a racer and it will avoid upshifting for a few seconds after you get off the gas. It feels like something is wrong if you're not used to it. I have not tried getting back on the gas during that pause before upshift.
Does your A8 have the latest fluid (Jan 2019 or thereabouts)? If it has the old fluid, you get a free flush with the new stuff, just by asking.
With the new fluid, the A8 has been working well for most people. We have about 20 of them in our club ranging from 2015 to 2019, most people are very pleased and have had no problems or minor problems fixed quickly. We've got 30k miles on our 2017 A8, works good but we got the new fluid last year just as a prevention.