when I am driving the needle is sitting at a litle above 80 id say about 90.
when in park the rpms slowly increase to a little over 2k and stay there temp climbs into the red 120 zone.

when the car gets hot i put it in drive after a block or so the engine cools down.

(i'm thinking this is a related problem to the very hard starts after sitting over night or through my 12 hr work shift. when the car does turn over it roughidles and dies untill the car warms for 3-10 seconds)