can be water pump, radiator, heater core, thermostat housing, hose, or freeze-out plugs
hi
you have to find where the leak is first.
Any coolant leak can cause an overheat.Any coolant leak can cause an overheat.
your water pump is bad Coolant leak? Fan inop? Rad plugged?
Broken or split hose Radiator leak heater core leak
Have the coolant system pressure tested, the pressure test will increase the coolant leak.
A crack near or on the thermostat housing can cause a coolant leak in a 1996 Grand Marquis. The thermostat housing is located near the manifold on this vehicle.
A leak.
Have it pressure tested and repair the leak.
dry rotted hose
Your heater core is probably bad.
It sounds like the tank has a leak.