Accleration stumble
Thread Starter
Burning Brakes
Joined: Mar 2001
Posts: 1,203
Likes: 147
From: dalton ma
Accleration stumble
When trying to accelerate gently in 5th or 6th gear at 1000 rpm the car stumbles until around 1500. Car now has 1200 miles and has done that since day one. Normal or ??? Standard shift, basic Stingray.
Le Mans Master
Joined: Mar 2016
Posts: 9,166
Likes: 4,012
From: 2019 CMG Z06/ZR1
Sounds like you’re possibly lugging the motor? I could be wrong, but I don’t ever recall that on my M7 because I always downshift.
Also, you are using premium fuel right?
Also, you are using premium fuel right?
Last edited by LT4CMG; Nov 24, 2019 at 08:56 PM.
Racer
Joined: Feb 2005
Posts: 253
Likes: 83
From: Eastern North Carolina
Thread Starter
Burning Brakes
Joined: Mar 2001
Posts: 1,203
Likes: 147
From: dalton ma
1. Not lugging
2. 93 octane EXXON
My previous C5 had no problem when driven the same way, likewise my C1 HP 327 has no problem with low rpm acceleration.
If I was flooring it I would not be complaining but just nursing it up a little" bit is not my idea of abuse
2. 93 octane EXXON
My previous C5 had no problem when driven the same way, likewise my C1 HP 327 has no problem with low rpm acceleration.
If I was flooring it I would not be complaining but just nursing it up a little" bit is not my idea of abuse
Le Mans Master
Joined: May 2010
Posts: 5,350
Likes: 2,408
Definitely lugging the engine and normal. Not recommended. At 900 RPM they say to downshift. So 1000k rpm is very close and definitely isn’t ideal for acceleration. I rarely see 1500 unless I’m cruising a long stretch on the freeway.
Last edited by saleen556; Nov 24, 2019 at 09:12 PM.
Le Mans Master
Joined: Mar 2016
Posts: 9,166
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From: 2019 CMG Z06/ZR1
in that case, I’d ask a corvette tech to go on a ride with you.
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If you are not lugging the engine, then do get it checked out by a dealer tech. Something has to be causing the hesitationl
Tech Contributor
Joined: Oct 1999
Posts: 41,058
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From: Charlotte, NC (formerly Endicott, NY)
Not lugging the engine. Lugging is when you try and run the engine below it's minimum operating rpm. My car will have some hesitation if I floor it from 1000 rpm in 6th. However, if I accelerate quickly without flooring it there is no hesitation. Not sure how the drive by wire controls the throttle but it seems like it may be opening the throttle faster than it should under those conditions. Similar to the old days with a mis adjusted 4 barrel carb that would kick in the secondaries too soon when the throttle was floored at low rpms.
Bill
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