Hey guys, Ive done a little search on my issue and found a few things but thought id start fresh and describe my issue and see what comes up here before taking in to dealer.

F-150 4X4 2010, Supercrew, Chrome Package, 5.4L

What im experiencing is precisely this:

I start the truck, back out of the driveway and put it in drive. Wheel turned to the left or right depending on which way im going obviously. Upon acceleration i feel a slight rumble for a second or two until i get going.

This happens anytime i accelerate from a stop when turned left or right. It almost feels like a slighter version of a tight turn with 4WD on. I assure you 4WD is not on.

Its a short box 5.5 btw so it shouldnt have the split differential ive been reading other issues about on the forum.

Its a 3 year lease, with 30,000 powertrain warranty and im sick about it because i just flipped 30K and am at about 32-33K. Wonder if ford would be gracious enough to take care of it being that close to warranty

 

Sounds like rear limited slip chatter to me. You are still on warranty, take it in. Powertrain is 5 years/60k, bumper to bumper is 3 years/36k.