Edit: Reread post. Im guessing your maf could be going out. Try unplugging it and see if it runs correctly. Also sounds like you did not bleed your coolant properly. Take off your rad cap while the car is cold. start up the car and put the heat on high. wait untill the car gets up to operating temp then top off the rad and then pop the bleeder screw slowly untill it starts pissing out in a stream. Put soem extra coolant in the overflow tank about 1/4 the way up and call it a day. Any excess air will bleed out by itself over the next few days, just keep an eye on the coolant.
