How do I know if I blew a head gasket?
The engine overheating erratically is the first thing that comes to mind. Other problems like hoses, radiator or heater core bursting or leaking all of a sudden. The extra pressure from combustion pressure entering the cooling system causes this. Continuous bubbles in the radiator overflow is another system. I would recommend having a certified mechanic inspect your vehicle for overheating and determine what repairs are needed.