Please Help
 

Ok heres the deal when i drive to work in the morning (5:30) everything is fine when i drive home there is more stop and go and the truck starts acting up when i come to a stop it starts ideling roughf and sputtering a little it did throw a code of P-0148 witch is high rail pressure but its been doing this for about a month now getting worse the last week or so and just threw the code 2 days ago. the one thing i do notice is the airdog dosnt prime every time i turn on the key and the best i can remember it use to come on every time i turned on the key but aside from that im not sure where to look next. under load it runs fine One other thing is i had some running around to do after work and drove longer than normal and the tranny got up to about 170 to 180:humm:

My Airdog doesnt prime everytime I start it too but if I listen it still runs when truck fires.