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Old 09-08-2016, 09:47 AM   #1
wrxturbo20
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Member#: 68055
Join Date: Aug 2004
Location: Seattle
Vehicle:
2002 wrx stage 2
WorldOne on back window

Default Windshield defrost problem

Heater works properly but when I turn the front defrost on ...only defroster blows cold air. Any ideas? 02 wrx. Thanks.
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Old 09-08-2016, 12:19 PM   #2
Samurai Jack
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Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

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Not much to go on

Did you turn on the heat when you shifted to defrost?
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Old 09-08-2016, 03:45 PM   #3
wrxturbo20
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2002 wrx stage 2
WorldOne on back window

Default

Quote:
Originally Posted by wrxturbo20 View Post
Heater works properly but when I turn the front defrost on ...only defroster blows cold air. Any ideas? 02 wrx. Thanks.
I was using the heater this morning and the Windows started to fog up a little so I turned the knob to defrost and nothing but cold air came out. Isn't the ac connected to the defrost system and maybe the trap door isn't closing?
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Old 09-09-2016, 07:49 AM   #4
Samurai Jack
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Join Date: Jul 2002
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2002 Enemy of Aku

Default

That's what I was thinking.

You have heat & A/C, but whichever you get depends on the position of the indicator
- Right Dial = Defrost on the far right
- Left Dial = Full Heat on the far left

but you can run defrost w/either heat or A/C

When was the last time you used the heat w/defrost?
Have you changed your radiator fluid lately? Possible you have an air block in the heater core?
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