[ricksc7]

I have noticed that when accelerating easy from 1st to 2nd the engine revs stay off idle just enough to hinder smooth gear changes. It doesn't have anything to do with the skip shift feature. the car wants to go into the next gear it just seems not to relax enough between gear shifts.
I have to admit I've only driven the car once before the snow arrived here in the northeast but was wondering if anyone else felt this.

As an experiment in the garage at idle I blip the throttle and notice it doesn't return as quickly as my Ford GT (in the next bay) or 70 Boss 302 both of which settle right back to idle once given a rapid stab at the throttle.
Has anyone noticed this lazy return of the revs.

 

[JCobalt]

yep i experience this. glad to know i'm not the only one. I kinda thought it was normal, so i didn't think to mention it to anyone.

 

[booie]

yep i experience this. glad to know i'm not the only one. I kinda thought it was normal, so i didn't think to mention it to anyone.

I believe they program that into the engines computer to be more environmentally friendly.

 

[ricksc7]

On further investigation it's known as "rev hang". It was mentioned by Edmunds in their long term 2014 corvette write up. According to them it's possibly an emissions thing but feel if enough people think it's an issue GM may issue a
re-calibration of the ECU.

If you want this issue addressed feel free to add your input.

 

[booie]

On further investigation it's known as "rev hang". It was mentioned by Edmunds in their long term 2014 corvette write up. According to them it's possibly an emissions thing but feel if enough people think it's an issue GM may issue a
re-calibration of the ECU.

If you want this issue addressed feel free to add your input.

Interesting.

 

[Rick-Vette]

It is a Rev-Matching bug that as far as I know has not been fixed - mine doesn't hang when the Rev Match is turned off. Most of the time I paddle Rev Match off before shifting to 2nd. No problem with any other shift.

 

[lakemg]

I have noticed that when accelerating easy from 1st to 2nd the engine revs stay off idle just enough to hinder smooth gear changes. It doesn't have anything to do with the skip shift feature. the car wants to go into the next gear it just seems not to relax enough between gear shifts.
I have to admit I've only driven the car once before the snow arrived here in the northeast but was wondering if anyone else felt this.

As an experiment in the garage at idle I blip the throttle and notice it doesn't return as quickly as my Ford GT (in the next bay) or 70 Boss 302 both of which settle right back to idle once given a rapid stab at the throttle.
Has anyone noticed this lazy return of the revs.

Assuming that you have Z51 (I'm using Tapatalk and can see if you have a signature with your car details) check the engine oil level. I was having a similar issue along with some other issues (check engine light lean code, weird shifting) that ultimately were due to the oil being over filled. As the revs got higher, the engine started consuming oil overflowed into the intake tube and was causing the rpms to not fall quickly after lifting off the throttle. In some cases when reving it in park/neutral, the rpms would either hang or continue to increase with foot off the throttle. If oil overfill is the culprit, dealer will need to drain some oil out, remove intake tube and clean it and the MAF and you will likely need a new air filter because it could be saturated with oil.

On edit: even when running fine, the rpms aren't going to drop off as quickly as an old carburetor engine. My '69 Z/28 drops off much quicker.