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Thread: Blower Motor Resistor Rebuild?

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    Basic Member 2gCummins's Avatar

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    Blower Motor Resistor Rebuild?

    Not sure if this is the right section for the question but...does anyone know if the blower motor resistor on a 2nd gen can be rebuilt or fixed? I haven't taken the time to pull it and look at it yet but in my mind if its just a resistor can't we just replace it for much cheaper?

    I'm sure I am wrong but wanted to know if anyone has heard of it.

    ​-2gcummins-


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    Old & Grumpy! Polaraco's Avatar

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    Sure it can be rebuilt, but why would you want too?


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

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    Basic Member 2gCummins's Avatar

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    Quote Originally Posted by Polaraco View Post
    Sure it can be rebuilt, but why would you want too?
    Well if it's just a resistor it would only cost $2-4. Otherwise its around $30 for the same thing. If it's easy enough I'd rather save the money and do it myself, but if it's too much work then I'll just order up the new one.

    Was more just curious if anyone had attempted to.


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    Old & Grumpy! Polaraco's Avatar

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    Quote Originally Posted by 2gCummins View Post
    Well if it's just a resistor it would only cost $2-4. Otherwise its around $30 for the same thing. If it's easy enough I'd rather save the money and do it myself, but if it's too much work then I'll just order up the new one.

    Was more just curious if anyone had attempted to.
    I'll see if i can find the values for the coil. I would think this is one of those items that would cost more to fix than it's worth. That was where I was going. I believe the coils are silver soldered.


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

  6. Top Of Page | #5
    Old & Grumpy! Polaraco's Avatar

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    This is all I can find on the resistor in the FSM for my 03


    cable.
    (2) Reach under the passenger side bottom of the
    HVAC unit and unplug the wire harness connector
    from the blower motor resistor.
    (3) Check for continuity between each of the
    blower motor switch input terminals of the resistor
    and the resistor output terminal. In each case there
    should be continuity. If OK, repair the wire harness
    circuits between the blower motor switch and the
    blower motor resistor or blower motor relay as
    required. If not OK, replace the faulty blower motor
    resistor.
    REMOVAL
    WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS,
    DISABLE THE AIRBAG SYSTEM BEFORE
    ATTEMPTING ANY STEERING WHEEL, STEERING
    COLUMN, OR INSTRUMENT PANEL COMPONENT
    DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE
    THE BATTERY NEGATIVE (GROUND) CABLE,
    THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM
    CAPACITOR TO DISCHARGE BEFORE PERFORMING
    FURTHER DIAGNOSIS OR SERVICE. THIS
    IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
    SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS
    COULD RESULT IN AN ACCIDENTAL
    AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL
    INJURY.
    (1) Disconnect and isolate the battery negative
    cable.
    (2) The blower motor resistor is accessable from
    the passenger side of the HVAC unit and is located
    on the bottom of the HVAC unit.
    (3) Pull out the lock on the blower motor resistor
    wire harness connector to unlock the connector latch.
    (4) Depress the latch on the blower motor resistor
    wire harness connector and unplug the connector
    from the resistor.
    (5) Remove the two screws that secure the resistor
    to the HVAC housing.
    (6) Remove the resistor from the HVAC housing.
    INSTALLATION
    (1) Install the new resistor in the HVAC housing.
    (2) Install the two screws that secure the resistor
    to the HVAC housing and tighten to 2.2 N·m (20 in.
    lbs.).
    (3) Plug in the blower motor harness connector.
    (4) Push in the lock on the blower motor resistor
    harness connector.
    (5) Close the glove box door.
    (6) Connect the battery negative cable.


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

  7. Top Of Page | #6
    Permanent Vacation K-Sons's Avatar

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    just toss in a new one
    but I did have to replace my blower and the screw in the back is not nice


  8. Top Of Page | #7
    Basic Member

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    Easiest thing ever... it's all in the passenger side under the glove comp


  9. Top Of Page | #8
    Old & Grumpy! Polaraco's Avatar

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    Replacing it is easy. Rebuilding it is another story.

    Glad it worked out for ya


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

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