The other day my truck stalled out and wouldn't start so I had it towed to the shop, the shop tested the fuel pump but couldn't find anything and it fired up and ran fine for them. It ran fine for a day and now is running extremely rich. The only code it's throwing is P0452 which is for the evap system. I spent awhile searching but couldn't find any answer on it.

I couldn't find any loose connections in the harness or on top of the fuel tank, I had the classic FDPM issues before so I replaced that.

I'm beyond frustrated with this hulk seems like once a month it wants to quit working.

 

What year and engine?

P0452 FORD EVAP Pressure Sensor/Switch Low OBDII Engine Light Trouble Code | Engine-Codes.com

 

2008 with the 5.4 flex fuel

 

fixed it, turned out it was just a pinched wire, thanks for the help khadma.