I have a 2005 Ford explorer sport Trac it has a
water leak I replaced the water pump and the
radiator and still losing water I would like to know
more about why this is still happening
If you can see water under the car, it's a leaking hose or connector, or thermostat housing. If there is no water under the car, water is going someplace. Might be the engine; check the oil to see if there's water in it. Or the transmission; water getting in through the trans cooler at the radiator. Also, check the condition of the coolant to see if there is engine oil or transmission fluid in it.