Recently while driving my engine will shut off. If I let it sit for about 5 minutes it will restart again, and drive for awhile. The other day it started to idle up and down drastically. I tested the car with a code reader, and got 2 codes on a OBD2 code reader. The codes are for EVAP purge valve C fault, and cylinder #1 misfire detected. I orginally thought it could be the fuel pump, but I am not sure. The vaccum lines look good. Could it be the EGR valve? Hopefully you can help me out. Thanks.