Hey was wondering if anyone could help me out. I have an 03 cummins w/ afe intake and afe blade runner GT turbo. My truck has been loping on and off for over a month now, if I put it in gear it’s smooth(Auto) if I turn the ac on it’s smooth compressor kicks off it lopes kicks back on it’s smooth. Also lopes when decelerating if there’s no load. No smoke ? great mileage took a 10k lb 5 horse trailer to globe and back to see if injectors were needing to be cleaned that didn’t change anything. Also no change with tuner hooked up or not. Only thing I’ve replaced is the FCA with no change. Idle is steady @800 even when it lopes. Any help is appreciated. Has NO CEL or codes hooked to snap on scanner. Cleaned a whole bunch of sensors and connections last weekend.
TIA
TIA