Overheating

I'm not exactly sure how to go about this but.I have a 1995 Dodge Intrepid and when this car gets hot or warm it will stop running then I'm forced to sit on the side of the road for hours at a time.I can't turn my ac on in the car because it will heat it up too quick and it will die. Leaving it sitting in the sun outside my apt. Will even I think cause it to heat and so it won't start.I can't even make a trip from my apt to work without it dying before I get there and work is only ten mins. Away.I was told it was something called a coil pack that a switch was overheating and needed to be replaced. Any ideas please tell me. This car is all I have. :Cry:

Dark_Poet84