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When heater is on defrost, air coming out AC vents


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Tex
New User

Apr 16, 2014, 2:12 PM

Post #1 of 6 (1779 views)
When heater is on defrost, air coming out AC vents Sign In

I have a 2000 Chevy S 10 Pickup. When I have the heater on defrost, hot air is coming out the AC vents. AC works fine.


Hammer Time
Ultimate Carjunky / Moderator
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Apr 16, 2014, 2:39 PM

Post #2 of 6 (1772 views)
Re: When heater is on defrost, air coming out AC vents Sign In

So, the mode doors aren't switching?

There is an electric actuator on the left side of the HVAC housing.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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Apr 16, 2014, 4:26 PM

Post #3 of 6 (1747 views)
Re: When heater is on defrost, air coming out AC vents Sign In

If and I say "if" like one I did battle with it was two rods over gas pedal that controlled mode from one actuator - electric and the "bones" which are plastic holding springs left rods dangling. Hard fix for stupid stuff on that one just to get at otherwise simple,


T



Discretesignals
Ultimate Carjunky / Moderator
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Apr 16, 2014, 4:31 PM

Post #4 of 6 (1743 views)
Re: When heater is on defrost, air coming out AC vents Sign In

Mode doors on those are vacuum operated.





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Hammer Time
Ultimate Carjunky / Moderator
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Apr 16, 2014, 5:05 PM

Post #5 of 6 (1739 views)
Re: When heater is on defrost, air coming out AC vents Sign In

Damnit............... every time I wing it from memory, you nail me...............LOL



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Apr 16, 2014, 5:09 PM

Post #6 of 6 (1737 views)
Re: When heater is on defrost, air coming out AC vents Sign In

I guess your memory is fading a little bit? The only reason I remember is because of the stupid vacuum reservoir they stuck in the fender that seems to always have rotted out vacuum hoses.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.






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