While driving i hear a sound like air blowing over an empty bottle.
Your radio isn’t working. Check the fuse.
can you hear the same at idle without moving ?
Yes, very faint and occasionally while at idle. I raised the hood, but I can’t tell where it’s coming from.
Radio works fine. SA
May be a leak in the airbox. Maybe a bearing noise. A stethoscope or a hose to the ear will help you locate. Throttle it at the linkage / throttle body under the hood and listen.
Possibly a leak in the power break booster which is vacuum powered
Would you walk up to a mechanic and say “Hey dude”, while driving I hear a sound like air blowing over a bottle" and expect him to be able to tell you what the noise is from? well why should someone be able to tell you over the internet?