OK, the problem started when we were drivin down the road at about 50. It lost a huge amount of power and when I floored it nothing would happen. So we pulled over and it was idling really low, 500rpms, and shakin real bad, it was missin like crazy at idle and when I tryed to give it a little gas to bring the r's up it would miss real bad to. So we let it sit for a minute and then turned it on and it was still runnin like crap. We headed home and it was still runnin like crap then all the sudden the car was fine. For a minute. Then it was back to ***** again. It did this all the way home off and on. The other night we were sittin at a red light and for about 10 seconds the rpm's dropped to 500 and the car was shakin like crazzy. We had the music blastin and it stopped so we didn't think anything of it.The check engine light is on so we're headed to autozone tomarrow. I was thinkin one of the coil packs went bad or maybe an IAT sensor. Please let us know what it might be because we need the car everyday.