I don't know how detailed a diagram or what systems you're looking for, bee, but you can download the whole owner's manual for a 2001 Sportage from Kia Canada: http://www.kia.ca/owners_manuals.asp?lang=en (scroll down). Page 233 of that manual has a decent engine diagram, but you'll probably want to download the whole thing first, since paging through to there online will take forever. Hope that helps!