Cool Beans.

 

I've got the v6 in my spirit, same year, and it's doing the same thing

 

Check the easy stuff first.
My old Acclaim did this to me once, it was just a bad radiator cap.
I've also had a faulty gauge cluster that would read hot when I turned the lights on.
Otherwise it could be a bad water pump or a bad headgasket.
Headgaskets were pretty common on the 3.0s as well. Usually a set of Felpros torqued to 80ft-lbs (factory is70) will hold up to anything you wanna throw at it.