1999 Mercury Mountaineer Logo
Posted on Jan 11, 2010
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Where is the blower motor resistor located on a '99 Mountaineer? is it easy to fix? the shop wants to charge $165

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  • Master 1,985 Answers
  • Posted on Jan 11, 2010
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If you can locate blower motor,follow the wires from the motor about 15 inches away those wires plug into the resistor

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  • Mercury Master 14,092 Answers
  • Posted on Jan 11, 2010
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THE BLOWER MOTOR RESISTOR IS ON THE BLOWER MOTOR HOUSING UNDER THE RIGHT SIDE OF DASH.DISABLE AIR BAGS BEFORE WORKING UNDER DASH.WARNING ONLY WAY DISABLE AIRBAGS IS TO DISCONNECT BATTERY CABLES FOR 10 TO 20 MINUTES.BUT YOU WILL LOSE PCM MEMORY CAUSING STALLING PROBLEMS.YOU WILL LOSE IDLE.IF YOU DECIDE TO FIX IT.YOUR SELF BE SURE TO TURN OFF RADIO BEFORE REMOVING BATTERY CABLES SO YOU WONT LOSE RADIO PLAYING CODE.

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here is info:

Control System Outputs-Manual A/C
Blower Motor Switch Resistor
The heater blower motor switch resistor has the following features:
  • The assembly is located on the evaporator housing in the engine compartment.
  • Three resistance elements are mounted on the resistor board to provide four blower motor speeds.
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  • An overheating protective device (thermal limiter) will open the resistor coil circuit when the temperature reaches 121°C (250°F) interrupting the blower motor operation in all speeds except HI.
  • The thermal limiter cannot be reset and is not serviceable.
Control System Outputs-EATC
Blower Motor Speed Control
The blower speed control is located on the evaporator housing in the engine compartment.
  • The function of the blower motor speed control is to convert low power signals from the electronic automatic temperature control module to a high current, variable ground feed for the blower motor (18527).
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  • A delay function provides a gradual increase or decrease in blower motor speed under all conditions.
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