Heater core replacement in a 2000 lincoln town car

SOURCE: heater core

bad news for you because you may have to take the dash apart on the pass side to pull heater core a shop wasnts about $600 in labor but it can be done i did on my 1993 good luck

SOURCE: how to replace a heater core on a 94 lincoln town

how to change a heater core on 94 lincoln

SOURCE: 2000 lincoln ls heater not working...thermostat?

no this manual wont work your LS is based on a Jaguar .
do you have the v6 or v8?

SOURCE: no heat

It sound's like one of two thing's, first open the glove compartment look behind to the left you will see a clear vacuum line going to a goldish in color accuator remove it once the vehicle is at normal operating temp. if you get heat then you have a problem with the vacuum switch, just plug the vacuum hose, you will have to reconnect it in the summer to get the AC working. The other problem could be the heater control valve, located under the hood inline on the hoses going to the heater core, upper passenger side of the fire wall.