I’ve gotten ahold of a beautiful black 98 DeVille Elegance with only 69,000 miles on it. The car drives great on the highway and most short distances, but there have been 2 times where the engine has overheated (240 degrees or over) once while stuck in traffic after being on the highway, and the other in a drive-through. Since then I have been very careful about sitting too long at stoplights if I can help it, etc. The one thing that stops me from thinking it could be the head gaskets, is the way it only overheats when it idles for long periods of time, and the fact that the ac works, but the heater doesnt (possible radiator/fan issue?). I love this car, and will do whatever I have to in order to fix it. You guys are my last hope as the past two mechanics I have taken it to hear the words “running hot” and “northstar engine”, they tell me they don’t want to deal with it or can’t.