Hi guys, i have a 6mt with about 400 miles on it. And when i turn off the engine it makes a weird clunk/shuttering sound?(not pressing down on the clutch). but when i press the clutch down the sound isn't there anymore(sounds like a jet shutting off). I was wondering if this was normal on 6mt. Also, when the car is on it sounds different when i press on the clutch and when i dont. like i hear a louder sound when i dont press on the clutch.

 

I'm not sure about the clunk/shuttering sound but I'm familiar with the "jet" sound and I absolutely LOVE it. The jet sound comes from the HVAC system fan powering off and is more profound if your A/C was on prior to shutting down the car.

 

The reason it sounds different when you press on the clutch is because the clutch engages when you step on it and when you dont it disengages. all manual cares do this some are just louder than others!

 

yeah, normal for my car too. it's more like a clattering sound to me. i only notice it when i have the window down as i am turning the engine off.

 

possibly the dual mass flywheel having some jossling action with the clutch engaged ontop of it and the weight of the the main input shaft upon it.

when you press the pedal in and the pressure plate unclamps the clutch disc(and input shaft pressure) off it, the resistance isnt there and the flywheel stops spinning easily with out noise. sound right?

 

yes our cars are very common with this...my 06 coupe did it as well, actually worse then my 07...search in the coupe section on clutch rattle you will find hundereds of threads on this.