Id start at plugs, Wires, Coil and fuel filter. Do the basics now.... Normally when driving thats the issue.
Could also be the TB but doubt it... You have had alot of work done, could even be a loose connection.
Dillard, Yours is the only one on this thread that is screwy..... The others all seem to be correct.. ALSO when the poster is looking, their OWN info does not show up until they post.... Weird... But not crucial.