Ok i noticed that my car would want to cut out at red lights ect but if i put it in nutral and give a little gas it would return to normal. But last night i was driving home and it started to idle funny when i came up to a red light now it wont start at all it acts like it wants to but just doesent. Also i notice that the heat when i out it on there is no air that comes out of the vents now. Could it be the ignition coil?Besides wanting to cut out it ran great at higher speeds or when i wasent coming to a stop.