probably the coolant level sensor... Does the temprature gauge go up to hot then down to normal?
What other symptoms besides leaking antifreeze? Where do you see the anti-freeze leaking?
I would check the hoses leading into your radiator, and also the overflow for antifreeze. If that is not the problem, it could be your heater core. Your heater core might be leaking, you might have a hose leaking
If your talking about coolant leaking on the passenger floor then it means your heater core is leaking and needs to be replaced.
you might have a blown head gasket and the coolant is leaking into the cylender and the engine is burning it.
The overflow tank is either cracked or its overheating and leaking from the cap
Because it 's leaking- OIL, ANTIFREEZE, or vacume leak
the heater core is leaking and needs replaced
If by water you mean engine coolant, yes. Loss of coolant, antifreeze, is a major cause of overheating.
your heater core is leaking. Needs to be replaced
Your heater core is leaking. It needs repaired or replaced.
there might be a leak some where in a coolant line. or maybe you have a leak in your radiator.
Look for leaking antifreeze/coolant. Usually you can see it leaking around the top of the engine. Also check your oil, if it looks milky it has been mixed with coolant and you intake manifold gasket is leaking. That being said, it is possible to have a leaking intake gasket with no sign of leaking antifreeze. Most intake manifold issues/leaks are coupled with poor engine performance and even sputtering and lack of power.