i took my car to the smog check station today and i was told that i didn't pass. what can i do, i am a single woman and i dont' know anything about cars and i need some help from someone, the guy at the station said i might need a new EGR valve?? what the heck is that and how much would something like that cost. i am 23 years old, and this is my second car and i've never had to deal with this problem. can anyone give me any ideas on how to go about this..