I haven't ever had idle issues, but i have had to replace my coil pack twice because of a misfire on acceleration. First time my original went bad so i was cheap and got a used one a junk yard which lasted about 2 years. About a month ago i got the same syptoms and replaced the used one with a new one. both times my coil pack had been the issue, not saying this is your problem but maybe look into it, pretty easy to replace too. Keep us updated.