Re: 97 taurus blower fan motor
I think this is your problem------
I posted before about mine having the same problem. In fact, my heater had useful control in the two higher positions. Last week I could smell plastic burning, after the stench went away, so did the next to highest fan speed.
I did try looking for a resistor as described in an earlier post. There is no resistor in that location in my 99 Taurus. The Ford service CD I have states the heator blower motor switch resistor (18591) assembly resistor is located on the passenger side of the A/C evaporator housing behind the glove compartment. There are three elements in the resistor board, it is in the air stream.
Look under the glove compartment box and you should see a plastic shroud. Remove the shroud by just pulling on it. Look to the right under where the shroud was, you will see the blower motor. Within 3-5 inches or so, there is a rectangular piece of high temperature board with an electrical connector attached. Remove the connector along with the 2 each 5/16" screws using a spin tight or other tool. That is the resistor board.
I just visited my local Ford parts counter and paid $16--- for the replacement part. OH--- the guys at the counter warned to look at the connector that plugs into the board for over heating. There is a chance you might need to replace the connector also. My heater is now working properly