sit at a light it runs rough .hit the gas does great . i was told by some other . there f150 with the 5.4 does same. i have a 2004 crew with 5.4 with about 60.000 miles

 

My 08 runs rough if it doesn't like the gas in the tank. I always buy 89. If I use the BP (with Invigorate) that "Ford recommends" I get the best mileage and it runs smooth. The other gas I use the most is Sunoco, but then it runs noticeably rough at idle and slightly lower mpg. So in closing, try switching gas and see.

 

Run some Seafoam through it, might help smooth it out.

Invigorate? Sounds like something you'd give a geriatric.