2002 Dodge Caravan A/C, HEATER BLOWER PROBLEM

Tiny
DONDSFUN
  • MEMBER
  • 2002 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 145,000 MILES
BLOWER TOTALLY INOPERATIVE AT TIMES, BUT THEN IT WILL COME ON AT A REDUCED SPEED ON ALL 4 SETTINGS. ALMOST SEEMS AS THOUGH IT HAS A POOR GROUND OR THAT THE MOTOR IS INEFFICIENT. THERE IS NO RYME NOR REASON TO WHEN IT WORKS OR DOESN'T WORK. IT NEVER RUNS AT THE NORMAL SPEED IN ANY OF THE 4 FAN SPEED SETTINGS SINCE THIS PROBLEM BEGAN. I'VE CHECKED THE CONTINUITY OF ALL THE FUSES, SWITCHES, SWAPPED THE RELAY AND REPLACED THE BALLAST RESISTOR PACK.
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Tuesday, July 7th, 2009 AT 9:34 PM

3 Replies

Tiny
BMRFIXIT
  • EXPERT
I would suspect a bad blower motor
unplug wiring at the motor and check
good luck
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Tuesday, July 7th, 2009 AT 9:59 PM
Tiny
DONDSFUN
  • MEMBER
THANK YOU FOR THE REPLY. I'M INCLINED TO AGREE WITH YOU, BUT I'M NOT SURE WHERE TO ACCESS THE PLUG OR HARNESS TO THE BLOWER MOTOR, AND IF IT IS INDEED THE MOTOR, I NEED AN IDEA OF THE PROCEDURE TO ACCESS THE MOTOR FOR REPLACEMENT. IT APPEARS THAT THE INSTRUMENT PANEL MAY NEED TO BE REMOVED. YOUR THOUGHTS ON THIS WOULD BE APPRECIATED.
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Wednesday, July 8th, 2009 AT 12:11 AM
Tiny
BMRFIXIT
  • EXPERT
Have to do the test when motor isn't working
two wires out the resister feed to the blower motor
disconnect them and you can feed battery bower to one and ground to the other
or use a test light or volt meter and check for power on one and ground on the other (out of the resister )
with key on
A/C or heat control on
fan speed on high

The blower motor is located on the passenger side of the vehicle under the instrument panel. The blower motor can be removed from the vehicle without having to remove the HVAC housing.

Removal
Disconnect and isolate the battery negative cable.
Remove the passenger side door sill plate and cowl panel.
Pull back the carpet to access the front upper screw that secures air inlet housing.
Remove the recirculation door actuator
Disconnect the blower motor pigtail harness connector from the blower motor resistor block or power module, depending how vehicle is equipped.
Remove the one screw (from the top) that secures the lower air inlet housing to the upper air inlet housing


http://www.2carpros.com/forum/automotive_pictures/99387_Graphic2_199.jpg


Remove the four screws (from the bottom) that secure the lower air inlet housing to the lower HVAC housing and upper air inlet housing.
Push the rubber grommet on the blower motor pigtail through the hole in the lower air inlet housing


http://www.2carpros.com/forum/automotive_pictures/99387_Graphic3_95.jpg


Feed the blower motor pigtail and electrical connector through the opening in the lower air inlet housing and remove lower air inlet housing from vehicle.
Relocate the recirculation air door as necessary to access and remove the three screws that secure the blower motor to the lower half of the HVAC housing.
Gently flex the recirculation air door far enough to remove the blower motor and blower wheel from the housing.


http://www.2carpros.com/forum/automotive_pictures/99387_Graphic4_47.jpg


Remove the blower motor from the housing by rotating and tilting blower motor as necessary. Note the position of the blower motor mounting tabs
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Wednesday, July 8th, 2009 AT 6:11 AM

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