Join Date: Jan 2008
Location: Dayton, OH
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As far as the truck not accelerating well when it's cold, that's just normal...even at 70*. If this is your first diesel then you have prolly yet to see the oil viscosity of 15W-40...it is like maple syrup and will not flow well when it is not warmed up (above 120* or so). This affects many different aspects of power and acceleration. First, the engine has to turn while the oil is real thick. Second, it takes a bit of power to pump the thick oil through the engine. The last reason that I can think of right now is that the thick oil running through the turbo doesn't let it spool quite as well. I can hear a noticeable difference in turbo whistle between cold and warm.
I don't have any experience with the code, nor do I know much about it but I hope it doesn't work out badly for you.
As for the acceleration of the truck at colder temps vs warm temps, I wouldn't worry about it, it's normal. Also, if the truck isn't warmed up it is best to try to keep it under about 2,000rpms or so.
Good luck to ya and definitely upgrade that lift pump ASAP
2001 Dodge Ram 2500 2WD Auto 5.9L Cummins: Raptor 150 w/ full 1/2" line kit, DTT Sump, Hypertech 3 Stage programmer, BD Boost Fooler, blocked wastegate, BHAF, 5" RSD exhaust, ISSPRO EGT, boost and fuel pressure gauges.