Engine Windshield Fogging Up When I Open The Temp Control

Detector

Active Member

Dec 12, 2004

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Jan 2, 2017

#1

• Jan 2, 2017

• #1

My 1965 convertibles windshield fogs up real bad on a cold day when I open the temp control or heat. What would cause this problem? A small leak in the heater core perhaps? Turning on the fan just makes it worse.

Thanks

 

dennis112

15 Year Member

May 15, 2005

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Amish Wonderland of Central PA.

Jan 2, 2017

#2

• Jan 2, 2017

• #2

Detector said:

My 1965 convertibles windshield fogs up real bad on a cold day when I open the temp control or heat. What would cause this problem? A small leak in the heater core perhaps? Turning on the fan just makes it worse.

Thanks

Click to expand...

Yep, that will do it. Also might sense an initial faint smell of sweetness, which would be antifreeze.

 

tos

Founding Member

Apr 27, 2001

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Cincinnati Ohio

Jan 2, 2017

#3

• Jan 2, 2017

• #3

Yes, Heater core leak.

 

horse sence

15 Year Member

Nov 29, 1999

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Wile Coyote's stunt double

Jan 2, 2017

#4

• Jan 2, 2017

• #4

One more for the heater core leak .Feel the bottom of the box and see if there is coolant dripping ,although it may not be at that point yet

 

tos

Founding Member

Apr 27, 2001

896

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Cincinnati Ohio

Jan 2, 2017

#5

• Jan 2, 2017

• #5

One other slight possibilty could be your cowl vent rusted thru and leaking water into your heater box. But i would still put money on the heater core