hum with light acceleration

[toybox]

I need advice on a hum or buzzing sound with light pressure on accelerator pedal. It doesn't seem to matter what rpms are at the time. It's more a matter of pedal position. the whole truck seems to resonate in this one pedal position. It gets a little worse in 4wd. I don't think it is the exhaust pipe touching the ride-rite mounts. Could it be the dreaded transmission recall? I haven't received a recall from ford. What are the symptoms of the tranny problems per the recall?

[clubsuperduty]

Mine does the same thing when first taking off from a stop itll make a buzzing noise sounds like its comming from right behind the firewall (top) on the driver side. if I let off accel pedal it will stop. doesnt matter what speed really once it gets past the initial take off or pedal push it is fine. anyone have any ideas?

I know old dead posts, just trying to find a similar problem someone might have had.

[F250crazy]

Oh man we need to know mine does the same thing. I thought it was a wheel bearing but it seems to go away after about 60mph. It only does it in O/D 40-60mph. light throttle no load. Where are you teamroper? I know you have an answer for us.