Author Topic: A/C heater fan not blowing  (Read 1065 times)

Offline 500Stroker

  • Full Member
  • ***
  • Posts: 550
A/C heater fan not blowing
« on: April 18, 2010 - 12:37:04 PM »
1973 Challenger, factory A/C car.

My fan blower has been intermittant for the last year.  When it would not work I would push all the buttons and move the high low switch back and forth a few times and eventually it would work.  Now I get nothing.  I pulled the plug off the back of the puch button switch.  I do have power in the center pin of the three wire connector.   

Connected 12 volts directly to the fan and it does work.

Is there anything inside the switch that can be rebuilt/repaired or should I just look for a new one?  I did not take it out of the dash yet.




Offline CHL2T

  • Full Member
  • ***
  • Posts: 823
  • Handle it, man!
Re: A/C heater fan not blowing
« Reply #1 on: April 18, 2010 - 01:45:30 PM »
Slotts can hook you up, gonna have him rebuild my switches and stuff if I ever get around to it :smilielol:

Offline Bullitt-

  • Permanent Resident
  • *******
  • Posts: 12167
  • Better Things To Come Member Since 2/16/06
Re: A/C heater fan not blowing
« Reply #2 on: April 18, 2010 - 08:00:38 PM »
Dunno about A/C but my standard heater fan switch was intermittent... I bent back the tabs that hold it together, dissembled cleaned, lubed & reassembled ..works fine now.
Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
Screwed by Photobucket!

Offline ShelbyDogg

  • Sr. Resident
  • ******
  • Posts: 5007
Re: A/C heater fan not blowing
« Reply #3 on: April 20, 2010 - 12:32:46 AM »
look on page 2 of this thread. I drew a diagram of the A/C fan circuit. You probably have a dirty push button switch that can be taken apart and scraped with a razor blade.

http://www.cuda-challenger.com/cc/index.php?topic=65095.15
Rob

3 E-bodies, Megasquirt-1v3.0, Edelbrock Pro-Flo-1, Holley C950, FAST EZ-EFI; say no to carbs...yes to throttle bodies

My Pace Car restoration thread:
http://www.cuda-challenger.com/cc/index.php?topic=44869.0


Offline 500Stroker

  • Full Member
  • ***
  • Posts: 550
Re: A/C heater fan not blowing
« Reply #4 on: April 20, 2010 - 08:26:42 AM »
Thanks,  I'll disasemble the switch and give it a good scraping tonight.