[TrevyP]

How's it going everyone, I'm so glad to have found this awesome community. I' had been saving up and doing everything I could to grab this car. 2011 ctsv manual sedan, 70k miles.

It pulls fine, and gets where it needs without any horrible vibrations or grinding noises at speed. However, especially after sitting a little bit, whenever I'm letting off the clutch at low speeds, this "dragging a metal can on the road" sound occurs somewhere in front of me and it's really scaring me haha, I'm not sure what it is I'd really like some insight.

2011 cts-v 6mt mystery scraping noise

youtube.com

 

[Blown376]

Are you feeling anything through the steering wheel or through the clutch pedal?

 

[kittyboy]

Without knowing the vehicle history, and even if you did, take it easy driving until you find the issue "dragging a metal can on the road" sound is not good obviously. It's good that you are keeping track of when you experience the noise and what is is you are doing at the moment it occurs, definitely helps diagnosing problems, but don't limit your investigation to any one system. It could be so many different things causing the noise, it may, or may not have anything to do with the clutch or transmission. This forum is a great place for research and advise, many known issues have already been well documented, much information is available, spend some time searching posts. If you have access to a lift and a mechanic friend to help, raise the car and have your friend 'gently' shift a couple of gear cycles to more accurately try and pinpoint the location of the sound and go from there? Take care, have fun, and make sure to use the proper lift points, SAFETY always!

 

[MrSurly]

Is related to letting off the clutch or just coincidental to it?
A first step should be a good visual inspection. Get it on a lift if possible. Check with a muffler shop for instance... tell them you have a weird noise, might be exhaust you think and they'll lift it and look around, usually for free.
I strongly would expect that you'll find some plastic inner fender or dust shield hanging and hitting a tire.

 

[BV_Mully]

Mine does the same thing at low revs when letting the clutch out. If I rev up higher there is no noise. My track 350Z did the same thing when I switched to a single mass flywheel. While the stock V uses a dual mass, I attribute the noise to the flywheel all the same. Mine doesn't slip, chatter at idle, or anything else odd so I just run it.

Does the noise go away if you give it some more revs when letting the clutch out?

 

[TrevyP]

Are you feeling anything through the steering wheel or through the clutch pedal?

I don't feel anything through those, pretty smooth actually, could it be the supercharger isolator?

 

[RocketSled]

whenever I'm letting off the clutch at low speeds

Give it a little more gas. At lower revs, the engine rotation rate isn't as smooth. There're plenty of places with lash in the drive line, and those inconsistent revolutions rattle them all.

Is this your first manual transmission car?

 

[Blown376]

I don't feel anything through those, pretty smooth actually, could it be the supercharger isolator?

No, that noise is generally heard as a rattle when turning off the engine. MrSurly gave some good advice, so his points should be tackled next.

 

[TrevyP]

Are you feeling anything through the steering wheel or through the clutch pedal?

I am not, happ

Give it a little more gas. At lower revs, the engine rotation rate isn't as smooth. There're plenty of places with lash in the drive line, and those inconsistent revolutions rattle them all.

Is this your first manual transmission car?

Its not, second manual daily Ive owned, and on most starts there's no noise or engagement problems, but after its been sitting, and I go to take off, the noise in the video occurs and it changes along with the revs, doesn't cause any vibration or anything like that.

Is related to letting off the clutch or just coincidental to it?
A first step should be a good visual inspection. Get it on a lift if possible. Check with a muffler shop for instance... tell them you have a weird noise, might be exhaust you think and they'll lift it and look around, usually for free.
I strongly would expect that you'll find some plastic inner fender or dust shield hanging and hitting a tire.

I have yet to get it on a lift and really dig around for any kind of rubbing or scraping, however the noise in the video happens usually every time its sat for a bit and im slowly releasing the clutch to head off. The speed of the ratting sound seems to go along with the Revs, not the wheel speed.

 

[rpw1690]

Can you make the noise if you release the clutch while staying in neutral? If it is the release bearing, it shouldn’t care if you are stopped or in neutral.