[:@]2002 grand am for some reason ithe idle speed goes from 500-1500 and wont stablize and eventually dies no clue whats going on HELP

 

It might be your MAF sensor, MASS AIR FLOW SENSOR, becuase my car is having the same problem and i read other forums about it so it may be the cause or the rev limiter or fuel sensor, check the inexpensive problems first