my son's 96 taurus has a 401 code( 3.0 dohc 24 v) so i'm planning on checking and cleaning the egr , passages, and checking the dpfe . i've been reading up on this because i'm not familiar with this vehicle. i've cleaned my other son's egr passage with a coated cable fraided on the end. this worked great on his buick, but will it work on this taurus? sounds like those three ports in the intake are small compared to the buick. or will a cable still work on this vehicle. if not , anyone have any tools they found that works well. (coat hanger , pipe cleaners. etc.) also, someone mentioned that the egr bolts are threaded opposite , is this true?