I turn on my front defrosters my windows get all fogged up

1995 CHEVROLET BERETTA
12,700 MILES • 4 CYL • FWD • AUTOMATIC
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CHOP5150
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when i turn on my front defrosters my windows get all fogged up and i cannot see.the heat comes out of the vents so i know the fan works.i smelled what i thought was antifreeze when i turned them on so i check it was low so i filled it up but everything still fogs up
May 20, 2008 at 9:09 AM
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SQM
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Hello,

This issue is likely caused by inoperative A/C compressor.
When the defroster gets turned on the A/C kicks in to dehumidify the air, this helps to evaporate moisture from the windshield.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak


So, check to see if the A/C is coming on. Sometimes the A/C compressor will not turn on due to being low on Freon. It can also have a bad relay for the clutch.
The relay is located under the hood (see diagram).
Check the relay for any corrosion or burnt pins.

Here is a procedure on how to test the relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
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Oct 27, 2021 at 11:38 AM