I have a 2006 5.4 CrewCab. Just recently I've encountered a problem with a rough shift into second gear when I start out. I think I read somewhere that it may be a pump issue. Usually if I rev up the engine in neutral or let it warm up a little more first, I don't see the problem as much.

Has anyone been able to resolve this problem? Replace the pump, etc?

 

Have you ever had the transmission fluid exchanged? How many miles on it?

 

May be a broken 1-2 accumulator spring.