Hey Virginia==There is a relay in the relay center. If it just quit, it probaly isn't the motor as they generally start making noise before quiting completely. Yopu may want ot get a manual on your car from AUTOBOOKSONLINE.COM. Good luck, Joe
Did you already replace the heater blower resistor? I only paid 30 bucks for a replacement at Cut Rate Auto Parts. Mine was rusted and broken.
Most likely a bad heater core
the heater blower resistor is located on the passenger side footwell near the firewall. a complete how-to replace the resistor, along with photos is available on newcougar.org http://www.newcougar.org/forums/how-tos/3732-fixing-heater-blower-resistor-install-photos.html
under the dash behind glove box
Dis-connect the battery, and wait a couple of minutes before you start working on it.
Could be the switch or the resistor and or the fan itself , There was a recall on this but to late to get it now , All are easy fixes
have you checked the fuse if so then you will need to replace the resistor for the blower hig and low dettings have you checked the fuse do you have 12 volts to blower if so then you will need to replace the resistor for the blower replace the blower motor
Continental/VDO New A/C Heater Blower Motor PM4820
A bad heater blower motor resistor would effect one or more blower speeds other than high.
Remove the wiring harness to the heater blower fan. Remove the retaining bolts. Remove the fan from the blower. Reverse the process to install the new heater blower fan.
Open the glove compartment and remove it. Disconnect the electrical connector and the three mounting screws. Remove motor.
replace heater relay and or heater blower motor