yes a core plug is a metal disc in the engine block about the size of a 50p coin these are meant to be a weak spot in the cooling jacket of the engine and in theory will give way if the coolant freezes instead of cracking the engine block
A leaking heater core will cause the engine to overheat because the coolant is leaking out.
drive it without coolant
A bad freeze plug will leak coolant and cause the engine to overheat.
The car's engine will soon overheat without some kind of fluid in the radiator. I'm taking off my coat before I overheat.
It will overheat, unless you can successfully air cool it.
Not the plug itself, but that lets all of the coolant out so the engine will quicly overheat.
Typical of the heater core leaking. Overheat because of low fluid and pressure. Foggy windshield due to heater core leaking and will smell antifreeze in the car.
Not for very long, the coolant will splash out to a point where it will overheat.
Not necessarily. It depends on what you mean by a bad heater core. The core will either be leaking or stopped up. If it is leaking, then it can cause the engine to overheat and the only fix is to replace it. A clogged or plugged heater core can sometimes be fixed by flushing it. You can also temporarily bypass the heater core until you can get it fixed. Just connect the inlet & outlet heater hoses together.
if you run your engine without antifreeze your car will overheat and ruin the engine.
Yes, low coolant will cause it to overheat without the AC; that is not the only reason that will cause overheating however.
no, it will not