look for a reinforced spot close to where the fron fender and front door meet. there should be a place where the metal has been beefed up.
have clutches checked. My 89 Ford Taurus had the same problem and the clutches that control the fans were shot
Probably 2
Right rear corner of engine compartment.
Rear end of the engine - front end of the transmission
My ford truck key fits and starts my taurus! But that might be because the switch is worn, but you might want to try a couple different ford keys before tearing off the steering column. there were answers for hard way also, here is one way that might work although it doesnt sound very easy to me: http://www.ford-forums.com/ford-taurus/4345-how-replace-ignition-switch.html