Just past 1,500 miles and the powerband suddenly changed. The torque and "rush" it made from 1,600 rpm to 2,200 rpm has disappeared, leaving only the boost that hits after spool-up at @2,000 rpm. It almost sounds like it's bogging when I floor it until it reaches 2 thou. Not much fun to drive in this condition. Any ideas?!?
Yeah, take it back tot he dealership and tell them it's broken. Have them inspect everything and definantly scan for codes.
Yeah, I would take it to the dealership, you only have 1,500 miles on it, let us know what the problem is/was.
How'd you guess? Dealer ran a diagnostic and found all o.k., with programming up-to-date. Also did a boost test on the road. I had just topped off the tank for a fishing trip tomorrow (first tow!) and noticed an improvement on the way to the delarship (of course !). Bad fuel, I guess . I guess I'm relieved, up until now the truck has exceeded my expectations. Hope it stays that way waytogo ! Thanks to all for the replies
So it's completely back to normal? Could have been bad fuel I guess, I've been lucky enough to never have gotten any. Knock on wood. Did you fill up at a place that looked like they don't get much diesel traffic? A general rule is to not get fuel at mom and pop stations where you think there isn't much diesel traffic. I avoid any small stations in town in most areas because I figure there isn't much diesel traffic. Just look around and you'll be able to tell if they sell a lot of diesel. My main station that I use 90% of the time has a CFN card lock, thats a great indication that you will be alright. Almost ALL CFN customers are diesel customers. I've also seen a large amount of medium duty trucks filling up and I know they help keep the diesel volume up since they take 70-100 gallons at a time, where we only take 25-35 with our pickups. Just pick out a good station, almost always fill up there, and always fill up there before you head out of town. You should be able to make most trips on a single tank and get back to "your" station since you should be able to go nearly 500 miles if you aren't in tow. If you do have to fill up out of town truck stops are your best bet. Oh, another good indication if a station goes through a lot of diesel (and gas) is they are the first ones to have a lower price when fuel prices start to drop off. As prices drop they go through fuel fast enough that they get new fuel at a lower price before other stations that don't see as much traffic and have to hold their pirces a few extra days.
Not completely normal, but better. I still think those symtoms are odd. The service guy and the mechanic both feel that engine break-in and the ECM "learning" (based on my present new truck driving habits -- still makes no sense to me) may play a role here, but they said "Everything is within performance parameters, you're good to go." I'm just glad it's not a boost leak or worse. At least I have it all documented.
My dad has an 03 and he forgot to change his air filter and it started blowing white black and white smoke, I took to a friend of mine thats a diesel mechanic he put a new air filter and it went back to normal, it will also do it to if you don't change your fuel filter.
