Kenshin XI

iTrader: (2)

When I'm driving and steadily cruising, the engine makes single popping sounds here and there and causes a small jerk feeling which is getting annoying while driving. Also when I let go of the gas pedal, it slows down normally, then around 1.5k rpms, I can feel the engine holding the rpms there by itself for a bit and then it gets a bit rough and misfires/pops until it goes under 1.3k and runs smooth again. It gets much worse while I either put on the A/C or have the headlights up at night. Under deceleration the car jerks and has a lot of raspy and rough popping until I turn off the a/c and/or headlights, then runs smooth. What are some possibilities that can cause this? I feel that theres some electrical issue thats involved too. I've recently changed the oil and oil filter, set the timing, and before those I used seafoam to clear out some carbon to try to help it.