I was driving home from school and all of a suddened, my car just die when i hit the stop light. I was like wtf. I cranked the motor and it started back up. I drove for a few block and it died on me again. Whenever i let put it neutral, the rpm will go drop and the car will die. Anyone have any ideas what's wrong??? Can it be a vacumn problem, fuel issue, etc. I have two codes. (14, 43) Idle Control Valve, Fuel supply defective or malfunction).