SHOULD YOUR HEATAC BLOWER MOTOR RUN ALL THE TIME...

  • Tiny
  • richfile
  • 1979 GMC
  • 80,000 miles

Should your heat/a/c blower motor run all the time on low with it not turned on to cool or heat?

Thursday, January 24th, 2013 AT 12:54 AM

5 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

Yes, it was called astro ventilation at that time

roy

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Thursday, January 24th, 2013 AT 1:35 AM
  • Tiny
  • richfile
  • Member

Is there a way of running the power for it it through a relay to where it will only come on when your'e calling for heat, cool, or vent? Or maybe modifying the relay that controls it now?

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Thursday, January 24th, 2013 AT 3:33 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

You could put a simple on/off switch for the power to the motor.

Roy

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Thursday, January 24th, 2013 AT 3:36 AM
  • Tiny
  • richfile
  • Member

Well yea, but I don't want to be drilling holes in my dash or somewhere to add a switch that doesn't look like O.E. I guess what I was looking for is can the power that feeds the relay now be moved to a power sourse that would only run when the unit is calling for heat/cool/ or vent, or does that relay have to have constant power for other reasons? Or, can I add a relay to break the purple wire feeding the motor, but I'm not sure how to control the coil fo the new relay.

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Thursday, January 24th, 2013 AT 3:21 PM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

Needs constant power. A simple switch for the blower would be the easiest solution.

Roy

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Thursday, January 24th, 2013 AT 7:19 PM

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