My check engine light has been on for awhile. I did get a scan and appearently it has something to do with the EGR. I did take it in for theOntario Emission test thing and it passed. Any idea what it might be ?. A defective sensor perhaps. ? And my next chore is to change the plugs. It is a 3.8 Litre Windstar. Any suggestions on how to get at the back three plugs. Can they be reached easier from underneath or are there things in the way. Fixed my ignition switch problem. Those tilts are a bear to get back together but i managed nicely with a C Clamp and a hollow spark plug socket. Sorry to be so vague but if there is something i'm missing you need to know just ask away.