Randomly Dies

Cars almost there. Car pulls hard, no pops in the exhaust, engine sounds smooth. But no the car randomly wants to die. When im moving and press the clutch the car idles fine. But randomly when i come to a stop or slow down to turn the car just dies out, smoothly as if i turned it off. Seems to become more frequent when other people are around to see it die and the longer i drive it. I did do a search about idles but couldnt find a similar problem or reason why this is happening.
 
My vote also goes to the IAC in this case. They're usually suspect if the car dies when coming to a stop or if a load is placed on the engine, such as the AC turning on or PS pump drawing some power.
 
The IAC is new, i dont know if its adjustable or not. A mechanic pulled the codes and said that the computer is telling it to go to 0% when it dies out but when it works normal it sets it to 30%. I dont know what that completely means though.