The overflow tank is either cracked or its overheating and leaking from the cap
If by water you mean engine coolant, yes. Loss of coolant, antifreeze, is a major cause of overheating.
maybe not. check engine oil for color and quantity. if oil is white to grey, then there is coolant leaking into engine.no pressure might be caused by bad radiator cap.this will also allow coolant to escape
you got an antifreeze leak
Do you mean that your heater core is leaking coolant ? That would mean that the heater core is clogged. The heater core is like a mini-rad, if it is clogged it leaks.AnswerNo, there is not an overflow tube/outlet on the heater core.See "Related Questions" below for more about Taurus / Sable heating/cooling systems.
Antifreeze is green in color and is leaking from your radiator .
If the radiator tends to get low, then putting antifreeze in the bottle simply tops it up but won't stop it getting low again, if that's what you mean. It's not a cure for coolant loss.
it sounds like your coolant over flow tank is leaking. it is a common problem with these cars. might also check your radiator for leaks or your exhaust for coolant, but if there is coolant in your exhaust that would mean blown heads
If coolant is leaking from a car it means that your radiator has a hole in it. If this is not fixed the car will over heat.
You have a coolant leak.
leaking heater core. need to replace it asap, and in the mean time keep an eye on your coolant level
The transmission cooler (possibly part of the radiator) has failed.
The "antifreeze smell out the AC vents" would mean only one thing, you have a small leak in the heater core.