2008 5.4 Super Crew, have an engine galloping/shaking when very slowly moving either forward or reverse usually on a slight incline when engine is hot from driving or pulling a small load. Dealer couldn't duplicate (doesn't do it all the time) and computer said truck is AOK. Not the type of gas, have used fuel injector cleaner. Anybody have same issue? MAF sensor maybe? Dealer says no!

 

mileage ? maintenence performed ?