On the passenger side of the vehicle, under the dash is the blower moter, there are two wires running from it, the one running to the resistor is mounted on the firewall. you remove the two screws with a star shaped screw driver, unplug the old resistor and plug in the new one...takes about 15 minutes.
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
Sounds like a blower resistor. Instruction for how to replace this resistor can be found in the link below. Thanks to newcougar.org user Goldie for the How-To. http://tutorials.newcougar.org/HowTofixheaterblowerresistor.pdf
Take it to a repair shop.
The Mercury Cougar blower motor is located on the firewall in the engine compartment. The blower motor can be seen on the passenger side of the firewall.
How do you replace a fan blower resistor on a vauxal Corsa?
When the heater resistor goes, your climate control fans will only work on the fourth setting. You can get a new resistor from any Ford Lincoln Mercury dealer, though they may have to order one.
In the black box right beside the battery. There are 2, a high speed and low speed relay.
It is probably the resistor. I had the same problem with my 99 Cougar. It is located on the passenger side under dash. Check with Ford. I think that this part was recalled.
If the blower works on some speeds and not on others, you may not need a motor. Instead, you may only need a new blower motor resistor.
how to replace blower resister on a 325i BMW 2002
open your glovebox, release the hydraulic arm from the right side of the glovebox. Next, lower the glovebox by pulling in left side. In front of you is the blower motor. To the left of the blower motor is a set of wires that are plugged into the Resistor. Unplug and unscrew to remove Resistor.
The blower motor speed resistor is burned out. You can replace only the resistor but the resistor probably burned out because the blower motor is going bad. If you want to fix it for good, replace both the blower motor and blower motor speed resistor.