cant think of a better description yet. But I've heard it twice now and only when it's the first start up of the day. It disappears after about 3 to 5 mins. I just became aware of this so I'm looking for suggestions on how to diagnose this. Idont know how long it's been doing it cuz I normally have the stereo playing. It is kinda muffled but I hear it coming from the engine area (in the center) when I'm sitting in the driver's seat. I'm not overheating. I'm changing air filter today after work. Haven't changed gas. No check engine light. No smells.
Tell me how to proceed. In the meantime I'll try to think of a better sound description or record it.