2003 altima 2.5

haveing trouble with the engine .as your driveing it starts to jerk like a skip then stops and runs fine for a well then it my start jerking again.ive replaced spark plugs,coils,cam and crank sensors i need help does any one have a clue..:banghead:

i found my problum it was one of the new coils ..it was bad.

Thanks for the post. My 03 has been doing the exact same thing. Even the dealership couldn't help me. I just replaced the plugs but the problem persists. I guess the coils are next. Thanks again.