When I am dead, I hope it is said;

just me, but i'm guessing water pump. i will say that i could always be wrong, but i've dealt with overheating engines more times than i'd like to admit. i know all the tricks and am so comfortable with AAA & tow truck drivers that it's scary. I've driven to a mechanic with duct tape holding my hoses together and administered copious amounts of stop-gap and water while holding my breath and praying for green lights all the way home. it sucks. it's nerve-wracking, and i hate it. i feel for you...oh, and i'm rambling cause i've had a few margaritas...but what do you expect. look at my user name. anyway, go to a mechanic you trust...cause the other ones will suck you dry on this one. muchos love.