Hey guys I have a 05 f250 with a 5.4 I'm having issues with I was driving along the truck started chugging along and the check engine light came on so I checked it with my bully dog the codes that came up were p0192 wich is fuel pressure sensor circuit low the next one is p0452 is evaporative emission pressure sensor switch low also came up with p0191 tonight haven't dug into that yet I change out the pressure sensor switch from a buddies truck didn't make a difference put my sensor in his truck his worked fine I clean the throttle position sensor and The maf also put a new air filter on not throwing a misfire code but seems like it may be any ideas of what to do or try guys?

A little background on the truck it's a 5.4 3valve with a bully dog tuner, mufflers been removed added straight pipe mechanically that's all that's done

 

Welcome to FTE, 05f250supercab.

What is the fuel pressure?

 

Maybe clogged fuel filter?

 

Haven't been able to check fuel pressure yet because there's no Schrader valve on the fuel rail not sure where I hook it up also changed the fuel filter it was a little gross but still flowing

 

Mine was doing the same thing. Nothing helped until I changed out all the coil packs.