2002 Dodge Caravan A/C, HEATER BLOWER PROBLEM

2002 DODGE CARAVAN
145,000 MILES • 6 CYL • FWD • AUTOMATIC
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DONDSFUN
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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.
Jul 7, 2009 at 9:34 PM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
I would suspect a bad blower motor
unplug wiring at the motor and check
good luck
Jul 7, 2009 at 9:59 PM
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DONDSFUN
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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.
Jul 8, 2009 at 12:11 AM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
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


https://images.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


https://images.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.


https://images.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
Jul 8, 2009 at 6:11 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.