Question about 2002 Dodge Dakota Club Cab

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1999 Grand AM Heater blower

Started out position 3-5 worked now no longer works in any position. I have replaced the blower resistor, I have checked for shorts in the wiring harnes, I even replaced the switch unit in the dash. If I connect the blower directly to 12volts it does work and all the fuses are good. I even swapped the relays under the hood. I do measure 12v olts at the blower connector in Position 5.

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Your Resister module for blower speeds is shorted, follow the wire from your blower it will connect to it, should be in blower duct near blower motor, two screws remove and pull from duct and replace or repair, I have been able to resolder them sometimes.

Posted on Dec 28, 2008

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Heater shrieking when cold for about 15 seconds, smelled burnt wires and now only high heat setting works.


replace the blower motor and the blower motor resistor....bad motor blew out resistor and went to d\efault mode which is high setting only...good luck...Lee

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How to change blower motor in. 99 grand Cherokee


Check this procedure...Blower Motor Resistor and Controller Replacement


REMOVAL

1. Disconnect and isolate the batten' negative cable.

2. Depress locking tab and unplug the wire harness connector from the blower motor

resistor or controller (power module).

3. Depress locking tab and unplug the resistor or controller connector from the blower

motor.

4. Remove the 2 screws that secure the blower motor resistor or controller to the

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5. Remove the blower motor resistor or controller from the heater AC housing.


INSTALLATION

1. Install the blower motor resistor or controller to the heater AC housing. The

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position. Tighten the mounting screws to 2.2 Nm(20 in. Lbs.).

2. Plug in the wire harness connector to the blower motor resistor or controller.

3. Plug in the connector from the blower motor resistor or controller to the blower

motor.

4. Connect the batten' negative cable.

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Hope this helps (rerember to rating this and leave a testiomonial).

Sep 30, 2011 | 1999 Jeep Grand Cherokee

1 Answer

Honda Accord 2002 heater blower control works only in the high position. The 1, 2, and 3 positions do not work but the high (4) does.


The heater blower is normally controlled by voltage sent to the blower via a resistor network.
In this case it seems that this unit also called the fan resistor is defective.
I assume that 4 is the position where the blower is running HIGH and in this position the blower is powered directly without using resistor for lowering the speed of the blower. In step 1 - 3 the blower is powered via the mentioned resistor network.

In my opinion the resistor network is defective.
Replace it !!!!.

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1 Answer

How do i change blower motor resistor on 99 jeep grand cherokee


Welcome to FIxYa.com



Blower Motor Resistor and Controller Replacement

Image Blower Motor Resistor Or Controller/Power Module Remove/Install

REMOVAL

1. Disconnect and isolate the batten' negative cable.

2. Depress locking tab and unplug the wire harness connector from the blower motor

resistor or controller (power module).

3. Depress locking tab and unplug the resistor or controller connector from the blower

motor.

4. Remove the 2 screws that secure the blower motor resistor or controller to the

heater-AC housing.

5. Remove the blower motor resistor or controller from the heater AC housing.

INSTALLATION

1. Install the blower motor resistor or controller to the heater AC housing. The

housing is indexed to allow (controller power module) mounting in only one

position. Tighten the mounting screws to 2.2 Nm(20 in. Lbs.).

2. Plug in the wire harness connector to the blower motor resistor or controller.

3. Plug in the connector from the blower motor resistor or controller to the blower

motor.

4. Connect the batten' negative cable.

leedavidian_45.jpg



Thank you for using FixYa.com

Regards, Lee Davidian

Nov 22, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Blower/heater not working on Trooper 1999 Need to


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Aug 17, 2010 | 1999 Isuzu Trooper

1 Answer

1999 jeep grand cherokee heater fan quit. 40amp fuse under hood good. both wires at motor test hot. motor turns strong when wired direct to battery. now what?


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1 Answer

1999 grand marquis were the blower motor resistor is located


this is for manual heater system. If you have electronic (digital display) you don't have one. Instead you have a blower motor speed controller.

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 in the engine compartment on the evaporator housing toward the center of the vehicle.
  • Three resistor elements are mounted on the resistor board to provide four blower motor speeds.
  • Depending on the heater blower motor switch position, series resistance is added or bypassed in the A/C blower motor circuit to decrease or increase A/C blower motor speed.
  • An overheating protective device (thermal limiter) will open the resistor coil 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.

Dec 12, 2009 | 1999 Mercury Villager

1 Answer

1999 Jeep Grand Cherokee the heat is not working or blowing?


2 problems?
No blower motor: Blower motor resistor very common or motor itself or heater controls.
No heat: Start simple with check antifreeze level after vehicle has sat for a few hours. If that's OK then it could be thermostat, heater controls, blend doors, water pump, restriction in cooling system

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1 Answer

Ford explorer heater fan not working


If this occurs in all positions, check fuse, check for power at the fan motor, if power in all positions replace motor. if no power at fan and fuse is good, check blower motor resistor and blower motor control switch. Replace as required

Oct 10, 2009 | 1999 Ford Explorer

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