Checked your coolant level? My Carina blew stone-cold before, but that was because the water pump had decided to pump the coolant out of the car instead of around it! Temperature gauge correspondingly hit the red mark, mind!
Is your engine temperature gauge staying steady or is it wandering up and down?
The coolant lvl is fine just had the radiator flushed. Engine temp is wandering up and down after driving for a couple of hours. but it doesn't wander past the normal point only to cold and normal position, when I say normal im comparing it to the position my other 91 ls400 is normally at.... i'm stumped...