I’m not confident as to what it is. Doesn’t go away if I turn off AC. It tends to go away after driving a while, particularly when letting the car get higher in the rev range. My main suspicion is the belts (idler belt?) are original and noisy, but I would like the collective ears of this community to let me know if this is something else entirely.

 

Is it the same high pitch you are referrring to in my video around the 1.06 minute mark?
I believe this is the fuelpump. Mine has been making that noise for the last 8 years without causing any issue

 

My 2007 has been making that sound for the last 4 years or so. My mechanic suspected the oil pump, but the sound is too 'dry' IMO and comes from the back of the engine rather than the front. I've always suspected the front propshaft bearing was going and making that noise. It's on my list to check out one of these days.

 

that’s 100% the same sound. Fuel pump prices aren’t awful (500-800 depending used or new) so it could be worth checking. As far as I can tell there are no other issues from the source of this sound, which means it’s getting bumped down in priority to fix

 

On the volante the fuel pumps are pretty easy to get out.... On the coupe you have to drop the tank which is pretty painful!

 

Hi,
Does anybody with this noise checked their propshaft bearings? I have same noise at 06 db9 and I’m suspecting also propshaft bearings, but it is quite a work to just check.

 

Mine makes exactly the same noise as OP’s car. Usually begins about a minute after starting the car and being left on idle. Tends to disappear if I blip the throttle gently a few times.

Did anyone manage to resolve?