Re: Loud Fluttering & Transmission Problems? (sd986)
I got the 'Fluttering' noise just the other day in my early '05 VIN V8.
It is, without question coming from the engine, not the exhaust or the sunroof. It sounds strangely like the Butterfly Valves on a Ducati V Twin when the throttle-bodies are not synched. This has only happened once on me and it was when I floored it from a near stop, to get out of the way of some nozzle who was fiddling w. his radio or something and not watching traffic in front of him.
Mine also has that issue where it seems to camp out in 2nd when shifting from Reverse or moving below 10mph, then it suddenly drops into 1st and will lurch forward. I've gotten used to it now, and I don't think its worth letting the stealer-monkeys in there to screw around w. it.
I have a feeling this will turn out to be fixable w. CAN BUS Flash or VAG setting though. Wonder if this could be related to the old issue w. the Phaetons (we share the same motor), when you used to hit the gas and it would just sit there for a second or two then take off like a bat out of hell.