Guys I'm on the Road with a 99 2500 V10 and it's running like POO POO..

It won't accelerate past 55mph down hill and struggles to 20mph up hill... it's eating 1+ Gallon a mile....( or so it seems )...

Fuel pressure is 48 while driving

 

feels like it's in a limp home mode....anyone know anything about this?

 

Check engine light on?

 

Check engine light came on and the codes were simple miss fires...

Turned out to be the Catalytic convertor was plugged.

thing is a POS

 

Sorry to hear that. Good luck.

 

Yup a clogged cat can defiantly wreak havoc. If you're not in Cali, we carry new catalytic convertors here for all kinds of applications. Tony