Hi everyone, I recently bought my first Mustang for a Chevy dealer (ironic, I know). It had some issues but I got a good deal, 2002 Mustang w/ 59000 - $6600. On my way home it started to miss extremely bad, the air conditioning quit and the service engine soon light came on. I changed the spark plugs and all is well now except the light won't go off. The code reads P0401 and that indicates a blocked passage on the EGR system among other things. Any advice on this? I have little car repair knowledge, all self taught. BTW; for all those who advised on the brake fluid to fix the foggy headlights, GREAT JOB!!!!. I have tried everything and that was all that worked.