Hello I am new at this powerstroke/Diesel thing but here goes. I bought a very used 2000 F250 (220,000 miles) The truck has something called the Ban?? 6 gun. (not sure I can say the name) I don't know anything about this stuff. But here is the issue when I crank the truck to warm up it idles fine for a couple of minutes then it kicks into high not really idling faster. The truck has a straight pipe exhaust and you can hear the the turbo get real loud and fast. When I tap the gas it drops back down but after it sits a couple more it gets real fast again, tap the gas it drops down again but repeats. Is it the program or something else?
Thanks in advance for your help....
Also I could use any help on understanding this banks system.