and how much should it cost to replace it? I have recently been having an issue with my 97 Kia Sportage that my mechanic diagnosed as an issue with the EGR valve. My car had been pulsing when idling, but would smooth out when I gave it some gas. He took a look at it, and I have no idea what he did, but now it seems to run fine. He still says I need to get the valve. So how much should this be? He is quoting a total of $300 for part and instillation. Thanks for the help guys!