Chad, i had this problem... it was the thermostat. It is not THAT bad to
replace, but you do get to bleed the coolant again :-)  OR you may have
buggered up the temp sender wire. I'd test the temp-sender (the singe pole
connector) first (see Bentley) and if that was ok, I'd order a new oil
filter, stock thermostat and O-ring & pick up some more coolant and then
attack the thermostat.

Good luck, we are all counting on you.
-m

Matthew Pollard          "Racing with the wind and flirting with death
Dept. Of Chemistry        So have a cup of coffee and catch your breath"
University of Idaho
www.uidaho.edu/~poll7356