I’m getting a droning noise when driving. To clarify, it only starts around or above 40mph never below and only when under power. If I touch the accelerator I get the drone, if I let off it goes away. I get it ONLY with the accelerator being pressed above 40mph, no other times at all. Can’t figure it out therefor I am a new member of StangNet... Thanks in advance. 2001 Mustang GT convertible. Also the frequency of the drone increases with speed.