ok if you're getting an EGR code theres 1 of 2 things that will make it throw that code, either the EGR is dirty or the EGR amplifier is malfunctioning.... the EGR amp is a common problem on fuel injected fords and very easy to replace.... shouldn't cost more than $40... if you had a scope meter or a vantage, you could check the amplifier and see if you are getting a proper signal pattern from it.... clean the EGR first with brake clean though.... then clear the code and see if it still happens, if so.... its gonna be that amplifier... the actual EGR hardly ever actually fails