There are really a few options:
1) Bypass the heater and buy jackets, and leave them in the trunk for all the people you may have in your car. I live in Florida, and I also have gloves.
2) Try a radiator stop leak. Might work for awhile.
3) Hire someone to do it, probably around $500
4) To get to the heater core is an all day job. It requires taking out the dash to access the device. The core itself is only $20, the labor is impossible. The core is on the passenger side, behind the glove box, behind a black encasing that holds both the heater core and the AC evaporator.
http://www.marksatterfield.com
behind the dash....
yes. it is located behind the dash
Replace the heater core. It is leaking.
you might be able to just go through the back of the glovebox to get to the heater core
it shouldn't
Heater Core
To replace the heater core on a 1997 Ford Thunderbird, start by disconnecting the negative battery cable and draining the coolant from the radiator. Remove the dashboard and the center console to access the heater core housing. Disconnect the heater hoses, unbolt the heater core from its housing, and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.
Cut both heater hoses and hook them together. Make the hose go from the motor to the radiator.
To replace the heater core in a 1992 Ford Thunderbird, start by disconnecting the battery and draining the cooling system. Remove the dashboard and the center console to access the heater core, which is located behind the firewall. Disconnect the hoses and any electrical connections, then unbolt and remove the old heater core. Install the new core by reversing the steps, ensuring all connections are secure before reassembling the dashboard and refilling the cooling system.
To replace the heater core in a 1994 Ford Thunderbird, start by disconnecting the negative battery cable and draining the coolant from the radiator. Remove the dashboard and the center console to access the heater core, which is located behind the firewall. Disconnect the hoses and mounting screws, then carefully remove the old heater core and install the new one. Reassemble the dashboard and console, refill the coolant, and test for leaks before starting the engine.
you have to remove the dash, get a Haynes manual Chilton's may be better rent from library) follow the remove dash instructions, heater core is slightly to the left of the glove box. remove heater core cover, remove hoses from heater core (engine compartment) pull out old core. pia job.
My heater core went out in my 95 Thunderbird about 3 months ago. Unless you know a ton about cars, you're gonna have to take it to a mechanic. It will be anywhere from $400-$800 to get it put in. Sucks since it's a 20 dollar part. But you gotta do what you gotta do.