Car hesitates
Thread Starter
Burning Brakes
Joined: Jul 2005
Posts: 836
Likes: 89
From: Tucson Az
2017 C7 of Year Finalist
Car hesitates
The car doesn't miss a beat at WOT but at low to medium acceleration it acts different. Like it hesitates almost like the computer is trying to figure it out. Its probably just me and I am not use to the a8. All my previous corvettes were a6 or m6. Does this sound normal? Some have said the computer needs to learn. After 1500 miles you would think it would figure it out.
Burning Brakes
Joined: Oct 2009
Posts: 1,004
Likes: 68
From: Cincinnati OH
Mine had a hesitation/stumble like you speak of after installing a ported throttle body. It took some playing with the tune to get it ironed out. Like you, at WOT it was fine, but just cruising along it obvious.
Melting Slicks
Joined: Apr 2015
Posts: 2,353
Likes: 779
High gear transmissions tend to hunt more often the older 6's when you modulate the throttle or brake on and off or whatever. This feels like the car shifting back and forth between gears or delay in engagements (up or down shifts) into the gear you would think should be demanded.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
A8s don't hunt in our cars - that's the beauty of our torque modelling. We make so much torque that it rarely has to change gears without a substantial change in load, and it's good as selecting the correct one, so far as I can tell.
If you tied the A8 to a little turbo four cylinder, then it'd hunt a lot I imagine. But mine sure doesn't.
If you tied the A8 to a little turbo four cylinder, then it'd hunt a lot I imagine. But mine sure doesn't.
Last edited by davepl; May 9, 2017 at 07:44 PM.
Melting Slicks
Joined: Jun 2016
Posts: 2,845
Likes: 518
From: Eastern WA
Mine is GS so could be a little different. I suppose there is some hesitation if you don't press the pedal far enough and get it to kick down a gear. When cruising at neutral throttle it always wants to shift the highest gear possible and then lock the clutch. I am really wondering if the LT4 trans is a totally different feel.
Melting Slicks
Joined: Apr 2015
Posts: 2,353
Likes: 779
A8s don't hunt in our cars - that's the beauty of our torque modelling. We make so much torque that it rarely has to change gears without a substantial change in load, and it's good as selecting the correct one, so far as I can tell.
If you tied the A8 to a little turbo four cylinder, then it'd hunt a lot I imagine. But mine sure doesn't.
If you tied the A8 to a little turbo four cylinder, then it'd hunt a lot I imagine. But mine sure doesn't.
Light throttle (like in traffic) with modulation and mine hunts all the time, as does every 8 or 9 speed I've ever driven, no matter the car, including my Ram truck. Ny A8 hesitates horribly downshifting in traffic as well as holding gears too long.
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