Location of Fan Blower Resistor

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No Twilight - 03 Aug 2006 15:22 GMT

Help. I can't find the fan blower resistor on my 99 Mercury
Mountaineer with climate control. I bought the replacement part and
expected to find it in the usual location(s)--in the ductwork ds of the
fan under the hood. Well there is a lot if aluminized insulation on
the box but no wires going in that I can see. So I took the glove
compartment out thinking it might be in the passenger compartment--no
joy. Anybody know the location of this part?

Thanks,
Jerry

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Steve Sigman - 03 Aug 2006 18:58 GMT

> Help. I can't find the fan blower resistor on my 99 Mercury
> Mountaineer with climate control. I bought the replacement part and
[quoted text clipped - 6 lines]
> Thanks,
> Jerry

It is in the blower housing but the auto climate control does not use a
resistor. It uses a motor controller which is significantly more
expensive. If you're looking under the hood at the blower motor the
controller is at about 5 o'clock. There's a black wireplug that goes
into it.

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No Twilight - 04 Aug 2006 13:47 GMT

Thanks Steve,
That was the problem. The dealer sold me a resistor and I needed the
controller. They should have the controller for me today and I can see
where it goes. Thanks, Jerry

> > Help. I can't find the fan blower resistor on my 99 Mercury
> > Mountaineer with climate control. I bought the replacement part and
[quoted text clipped - 12 lines]
> controller is at about 5 o'clock. There's a black wireplug that goes
> into it.

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No Twilight - 05 Aug 2006 15:59 GMT

OK. Followup. It's a little difficult to get to. The screws that
hold it in are sheetmetal screws and take an 8mm socket. I removed
what I think is the cruise control actuator (one 10mm head screw) and
used a 1/4" drive ratchet to remove the outboard one--slow and tedious.
I used a replacable tipped screwdriver adapted to the 8mm socket with
about 10" of extension to reach the inboard one pretty easily. You'll
need a flashlight or shoplight even in good lighting.

Fan works fine now. (symptom was no controlled speeds, only high and
off)

--Jer

> Thanks Steve,
> That was the problem. The dealer sold me a resistor and I needed the
[quoted text clipped - 17 lines]
> > controller is at about 5 o'clock. There's a black wireplug that goes
> > into it.

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Steven Hilgendorf - 03 Aug 2006 19:03 GMT

On the 1998 Mountaineer the Blower Motor Switch Resistor, if that's what
you're referring to:

The heater blower motor switch resistor has the following features:

1. - The assembly is located on the evaporator housing in the engine
compartment.

2. - Three resistance elements are mounted on the resistor board to
provide four blower motor speeds.

3. - Depending on the heater blower motor switch position, series
resistance is added or bypassed in the blower motor circuit to decrease
or increase blower motor speed.

4. - An overheating protective device (thermal limiter) will open the
resistor coil circuit when the temperature reaches 121ºC (250ºF)
interrupting the blower motor operation in all speeds except HI.

5. - The thermal limiter cannot be reset and is not serviceable.

Good luck,

Steven

> Help. I can't find the fan blower resistor on my 99 Mercury
> Mountaineer with climate control. I bought the replacement part and
[quoted text clipped - 6 lines]
> Thanks,
> Jerry

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