Acceleration issue
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Acceleration issue
Just wanted to see if any of you have experienced this: Accelerating under full throttle at about 5500 RPM's, then push in the clutch to upshift,(clutch in/foot off accelerator)...upshift...back on the throttle, to the floor, and there is nothing for a moment and then it accelerates. I know with direct injection at idle there is a delay when you blip the throttle. This is almost like that only when I'm accelerating. Rev match off.
Dealer service tech has never heard of it and I will schedule an appointment. No codes have been triggered.
Thanks for any feedback.
Dealer service tech has never heard of it and I will schedule an appointment. No codes have been triggered.
Thanks for any feedback.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,821
From: Charlotte, NC (formerly Endicott, NY)
Haven't experienced anything like what you describe and I regularly shift in the 6K to 6.5K rpm range when on track. In a single track day I make this kind of a shift somewhere over 150 times.
Bill
Bill
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Unless you were in a corner and in a PTM mode where the computer is being asked to modulate the readdition of the throttle, there should be no delay. There certainly isn't in my current A8 or last gen M6.
As long as you don't think it could be managing traction in some way, doesn't sound normal to me.
As long as you don't think it could be managing traction in some way, doesn't sound normal to me.
Last edited by davepl; Aug 15, 2016 at 11:59 AM.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
When I had a C6Z the traction control would kick in on a hard 1-2 or 2-3 shift and kill the thottle for a split second with nannies on. Not sure what a C7 m7. does. Mine is an A8.
Last edited by 383vett; Aug 16, 2016 at 12:36 AM.
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Thanks for your responses. This is definitely not a Traction Management issue. I remember how that felt on my C6Z. This is in a straight line just after shifting and getting back on the throttle. There is nothing there at all for like a half a second. It's too bad, the car is perfect in every other way. If it was a throttle position sensor or a computer issue I would think it would trigger a code. It definitely is not normal. I am just curious if anyone has experienced this and what the fix was.
The last thing I want is the dealership flogging my car to simulate the condition.
The last thing I want is the dealership flogging my car to simulate the condition.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
How'd you rule that out? I ask because the traction control on this car is much more subtle than the C6, so it's hard to know sometimes what it's doing.
It's not like the old C4 "add slack to the throttle cable" ASR system, that's for sure!
Make sure you take a look at the traction control light to see if it flickers next time, just to be doubly certain.
It's not like the old C4 "add slack to the throttle cable" ASR system, that's for sure!
Make sure you take a look at the traction control light to see if it flickers next time, just to be doubly certain.
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
How'd you rule that out? I ask because the traction control on this car is much more subtle than the C6, so it's hard to know sometimes what it's doing.
It's not like the old C4 "add slack to the throttle cable" ASR system, that's for sure!
Make sure you take a look at the traction control light to see if it flickers next time, just to be doubly certain.
It's not like the old C4 "add slack to the throttle cable" ASR system, that's for sure!
Make sure you take a look at the traction control light to see if it flickers next time, just to be doubly certain.
One other thing: I'm in track mode alot. Aren't the nannies less intrusive in track mode?
Last edited by capevettes; Aug 15, 2016 at 02:49 PM.
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Dave, I will keep an eye out for it but I really don't feel like I'm losing traction because I have just shifted and am just getting back on the throttle and it just doesn't react. No throttle at all.
One other thing: I'm in track mode alot. Aren't the nannies less intrusive in track mode?
One other thing: I'm in track mode alot. Aren't the nannies less intrusive in track mode?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Thanks Higgs. I will try Touring and see what happens. Maybe the Nannies are intruding too much in Track mode. Not what I expected. I will let you know how it works out.
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Maybe you guys are right. I'm just not used to Nannies kicking in when I clutch, go off throttle, shift and then hit the throttle. Maybe it's sensing an imminent problem like we have seen on some of these videos.
Driving it 500 miles to Carlisle, Pa. from Mass next Wednesday. That should give me plenty of time to assess it. My wife doesn't like the high RPM shifts, but we will see what happens.
Driving it 500 miles to Carlisle, Pa. from Mass next Wednesday. That should give me plenty of time to assess it. My wife doesn't like the high RPM shifts, but we will see what happens.
Racer
Joined: Jun 2016
Posts: 361
Likes: 44
From: PA
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Not a big fan of driving the Z into the woods but I will give this a try on a wide open stretch of highway. Nannies off/throttle on 
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,821
From: Charlotte, NC (formerly Endicott, NY)
If you aren't in any of those sub modes you may still have Traction Control. I know when I push the button twice to get into the sub modes the system defaults to wet mode which reacts very similar to the standard weather mode with a very intrusive traction control and power reduction. Just moving the selector to Track may actually put you in that default position without it being displayed. Make sure you get into Sport 1 at a minimum.
Bill
Thread Starter
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Which track mode are you in? Just placing the selector in the Track Mode position doesn't do much as far as the nannies. Once you get it in Track Mode push the center of the selector button twice and when you see Wet, Dry, Sport 1, Sport 2 and Race select Sport 1, Sport 2 or Race. Sport 1 will give you some stability control, PTM and no traction control with a slight power reduction, Sport 2 gives you PTM drops both Stability Control and Traction Control while Race gives you PTM, full power and no Stability or Traction Control.
If you aren't in any of those sub modes you may still have Traction Control. I know when I push the button twice to get into the sub modes the system defaults to wet mode which reacts very similar to the standard weather mode with a very intrusive traction control and power reduction. Just moving the selector to Track may actually put you in that default position without it being displayed. Make sure you get into Sport 1 at a minimum.
Bill
If you aren't in any of those sub modes you may still have Traction Control. I know when I push the button twice to get into the sub modes the system defaults to wet mode which reacts very similar to the standard weather mode with a very intrusive traction control and power reduction. Just moving the selector to Track may actually put you in that default position without it being displayed. Make sure you get into Sport 1 at a minimum.
Bill