Originally Posted by banditsdiesel

and the 01-02 has a cam and crank sensor. but if one of them goes it will throw codes. so that kinda rules out that.

Originally Posted by kingbrad89

So lately I've been trying to figure something out that's killing me. My 01 is occasionally sputtering above 2k rpm at highway speeds when I get on it. Say goin 70mph, overdrive obviously, give it some throttle up to about 2100, 2200 rpm and that's about where it starts to sputter/buck. I have 15psi fuel pressure at all times. Initially I thought it felt like the trans OD slipping but then kicked it down to 3rd with the converter locked and it did the same thing. Only not quite as bad. So i don't think it's the trans. It's one of those things that is so hard to figure out where it's coming from. Truck runs perfect otherwise. I ordered a new airdog filter for sh*ts and giggles, but it's only a little over a year old so it's most likely ok. It seemed like it started as soon as it got cold out. Could it be bad fuel? I run diesel kleen in every tank. Sometimes it doesn't sputter at all and runs fine, but most of the time it does what I listed here. Any ideas?

Originally Posted by banditsdiesel

new injectors dont mean a thing. if the spring/pop off pressure isnt right they will buck and it will be more noticeable in the cold. mine are fine ish in the warmer weather but in this extreme cold we are in now it will beat you out of the truck. so they are coming back out to drop the pop off on them. and your sig said comp so that were i got that. you still wanna unhook it and try that it will be a quick way to rule it out.