This is for an 04 Honda Accord 2.4L that's been acting strange. When the car is running and AC is off, car runs fine while driving but when I come to a stop, the engine sort of shudders and RPMS increase from 750 - 1100 and come back down and this happens twice then goes back to normal. Also, when running the AC, same thing happens. Engine shudders and rpms fluctuate sporadically.
Any thoughts or recommendation on what to check would be greatly appreciated.