My 2006 F150 5.4 3 Valve was running so bad.It didn't have the get up and go like it used to . Some times it was a problem to get into traffic But I thought it might have something to do with the battery. Because if it was parked for a few days (3 or 4) it wouldn't start. So I took it to have the battery tested. It wouldn't take a full charge so I had it replaced.Now it's got it's throttle response. I had no codes.
Just wanted to share this with anyone that might have the same problem that's driving them Nuts.

 

Thanks for sharing that info.

 

Ditto. Thanks for sharing!