Low RPM Surge.
Hey everybody. I already checked the archives for similar complaint/problem but no one seemed to have the exact one as mine so here it goes. Truck is 05' with 52K on the odo, mods are K&N cold air intake that I just recharged the cleaner about 2 Mos ago, and it has straight dual exhaust with no cats and shorty performance mufflers. Since the truck has no cats I had to do the spark plug de fouler with still wool and have not had any cel since wich is around 2 mos. Last week it started sputtering and surging around 1700 rpm and 30 mph and it makes the exhaust sputter and cackle and the truck runs like crap until I let off the gas or accelerate above to around 2500 rpm and then it seems to run fine, no cel or codes are being thrown as I did the ignition on,off three times trick to see if any codes come up and the only thing that comes up is "done" and then it populates with the mileage. So I heard it could be the EGR valve so bought a new one and put it on last night. I noticedwhile removing the old one that it was attached to the block with only one bolt and a higher amount of black carbon around that side and figured the original had vibrated out so I thought that could be part of the problem. So I installed the new EGR valve and gaskets and drove it to work today and the exact same sputtering and surging around 1,700 rpm and then I realized I didn't reset the ecm so when I got home I took both battery cables off and touched them together and let it sit for an hour to clear the computer and reset it and then put the cables back on test drove it and the exact same sputtering and still no cel or code? what's next as I have to do something quick because the surge is a little dangerous and noisy with my exhaust. If it was plugs wouldn't ot do it more than at just around 1,700 rpm? any ideas?