i have a 1993 eagle talon (1.8) and i was driving down the highway when i realized there was no heat. i glanced at the temp guage and saw it was over heating. at that point i lost all power in the engine and made my way to the shoulder. my car will start, reluctantly, but will not go above 2500 rpm. no water in the oil, and no oil in the water. what else could it be?