Blower fuse on 99 mercury cougar continues to blow

Cooling fan resistor is bad . Not for the blower motor . Your vehicle has a resistor for low speed . https://www.partsgeek.com/m12x6z5-mercury-cougar-engine-cooling-fan-resistor-kit.html?gb=pp&cid=28884375&aid=4168799411&kid=1100003049345&msclkid=8a1cd81bc27c1b6b2f91875eab155326&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping%28BSC%29&utm_term=1100003049345&utm_content=Mercury&

this sounds like the blower motor resistor has gone bad and needs replacing.i`m surprised you waited this long before fixing it

You have two other components that control the blower, the control switch and the blower resistor block. The switch is the knob you turn to select the speed and will cause you loose power to the next component that is the resistor block. This part is usually next to the blower motor because it needs to be cooled by the fan and it is responsible for the different fan speeds. Either component can cause a total loss of the blower fan. Go to a online parts lookup like autozone.com and it will show you a picture of the parts so you can identify them.

SECTION 412-02: Heating and Ventilation 1999 Cougar Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 02/8/2001 Blower Motor Removal

1. Remove the footwell upper trim panel (passenger side).
   • Remove the pushpins.

1. Remove the blower motor.
   1. Disconnect the electrical connector.
   1. Lift the securing tab, turn the motor approximately 30 degrees counter-clockwise and remove the motor.

Installation

1. NOTE: Engage the securing tab for the blower motor.
   

it could be the electronic blend door motor. Try not changing any settings for a week and see if the fuse blows. Leave it on floor/defrost.

usually it is the bearing in the blower motor going bad. I believe it's a 25 amp fuse. The motor draws about one amp for each volt increase up to 14 volts.

go to our site for more help.

http://groups.yahoo.com/group/villagerquest/

Use the diagram at the link below. First check fuses 23 and 37. If good, pull out the blower relay and probe the relay socket with a voltmeter or test light. Turn the key on and turn the blower switch to high. There should be two hot terminals in the relay socket. If good, move your red lead to battery positive and probe the other two terminals. One should be solid ground and the other should show a few volts. If all good, push the relay back in to see if it clicks. If it clicks, move to the blower motor connector. Put your black lead to chassis lead to ground and probe the terminal with the purple wire. It should be hot. If yes, the problem is at the switch. Verify that yhe switch is getting ground on the black wire at the control head connector.
If you can run these tests, you will find the problem. Let me know if you get stuck.



http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=16596

If you do a voltage check right at the motor you'll know for sure. I usually use my test light or multimeter and poke into wires at motor. If no voltage, start back-tracking which usually means resistor next. If you have 12 volts going to motor & it's not spinning, then I'd be pulling motor. You can manufacture a set of jumper wires to motor connector, and use a 12 volt cordless battery to test motor if you know how.

SECTION 412-04: Control Components 1999 Cougar Workshop Manual REMOVAL AND INSTALLATION Blower Motor Resistor Removal

1. Remove the upper footwell trim panel (passenger side).
   • Remove the pushpins.

1. Disconnect the blower motor resistor electrical connector.

1. Remove the blower motor resistor.

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remove the trim panel below the glove box and you will see the blower motor,just to the left of it you will see a 4 wire connector plugged into the case. This is the blower motor resistor,this is what you need to replace.

I had this exact problem, it is probably your Blower Motor Resistor. It is located under/behind your glovebox, one screw holds it in. Not too expensive either. If that doesn't work it may be your blower motor. Good Luck!