My 05 2.4L randomly starts sputtering when driving and sometimes when it's idling it'll lope, when it starts sputtering when driving if you push in the clutch and mat the gas it'll the RPMs slowly climb and the motor is missing and sputtering the whole time. It seems that it's random, but recently I've noticed it does it more often around a half tank of fuel, and really badly below a half which is what makes me suspect the fuel pump. The check engine light occasionally comes on and goes off when it's doing it, I can't remember the code but I'll get it tomorrow and report back. Thanks for any help!!! I just wanna get my Jeep runnin good all the time, not just 90% if the time.