15-1900rpm vibration/buzzing
 

when engine is cold and start driving a vibration/buzzing sound starts at 1500-1900 rpm when driving slow. it sounds like its coming through thedash behind the radio. if you go over 1900rpm or are under 1500 you dont hear it. but as you are driving and the engine is warming up it starts to dissappear. it is only when engine is not warm it is around. any thoughts or does anyone have this problem. truck is a 2011 f150 eco

Yup, me too. It gets worse the cooler it is. 2011 eco. It has done it since new. I should probably get it looked at

had the same problem with my last eb f150, my new one dont do it. It sounded like something loose like a thin heat shield vibrating.

the noise i was hearing was a ground strap that was out of position and touching a engine cover. they rerouted strap and now noise is gone.