So i got the dreaded p0191 code and dogs my research and replaced fuel filter, driver module, and rail sensor. What's left besides fuel pump. The three causes ive already cured have left me stumped. Any other sensors got anything to do with this code? This is the first time I've ever worked on a v10. They have been good to me and ive had three of them. So I'm willing to put some time into this one. It's got higher hours on the engine. It sat and idled alot. It's got 167k and 7400 hours. Any clues or suggestions would be great.

 

Another important note is if this happens and i pull over and shut the engine off and restart it goes away. Or if it's doing the shutter and stalling and i put my foot to the floor it'll slowly just die.