Thats what i hear often...
Its a loudish hmmm nosie coming from the pass side.
I opened the hood and listed sounded like it was coming from the air box, maybe could be the alternator???

Driving i dont hear it, just idling i hear it...Sometimes it goes away too, like itll do it for a little while, then not??

Any diagnoses??

 

The noise is coming from your IAC (Idle Air Control) valve. You can try cleaning it, but more than likely, you will have to replace it.

 

you know i hear the same noise accept its in my first and second gear only hear it when accelerating i never heard it when at idle...
i have 3.73's and 33's and oyur setup its much differnt so you might be going threw the same problem as me.. so someone help us! lol