Let's try this again...
1) If you hear it boiling, there may be air in the coolant or something - its probably not boiling. If you engine temp. is fine, its probably nothing though. Do you have extra water/coolant in the overflow bottle?
2) Fix your ignition system, and your car dying problems will go away. See my above post. Same thing happened to me after I got some water in the distributor, I dried it out, and while I was at it replaced the spark plug wires, distributor cap and rotor. Problem solved.
-Charlie