I just replaced my caty b/c it had gone bad. After i got it replaced the car starting running rough and had a rich car smell. After putting in new spark plug and new wires the car still did the same thing. After testing it once again i came to the conclusion that the 3-6 coil was dead. I replaced that coil and the car ran great for 20 minutes before a new problem came up. It tried to rev up by itself. When you take your foot off the gas it revs up then all the way down to 1000 and acts like it wants to stall. At a red light or stop sign, it goes below 1000 and stalls. If i don't keep the gas pressed at all times it wants to go below 1000 and stall. Any suggestions????