Well, I've read all the other post and thought I would try some of them. The problem is the idle shakes the car. Not a lot, only like someone isslighty rocking the car. I took theair control valve off and cleaned it as well as the throttle body. Both were in needof it. Put it all back together and the same thing happens. It had new plugs, wires and cap already. Timing is on mark. If I give a little more gas it smoothes out fine. Could it be theair control valveis bad?