40th Anniversary Fog inside of car when air is on.

[rlvincent]

I just purchased a 93' Vette, and when the air is on a fog comes out of the air ducts. Any suggestions?

 

[kenmack]

check carpets

check your carpets very closely, pass side for heater leaks, or anywhere else for moisture in cabin:confused
Otherwise could be something unique to A/C system.Talk to a technician who knows A/C systems.

 

[Ruby Fan]

Try the system with the a/c mixed with outside fresh air. If you have a/c in the recirculating position this may happen. Especially if the windshield fogs up.

 

[njlouc]

Check the smell. If it smells like antifreeze it is probably a heater leak, however the most likely cause is a plugged condensate(water) drain. it is a small "rubber bulb" splitat the end that lets the water drain out of the plenum. If clogged you get water in the A/C area and into the car. If clogged you should squeeze it until the junk comes out and flush with water until clear. It is in the firewall area near the A/c.

 

[kelly3]

check your heater core i had the same problem on my z28 the heatercore had a small leak an it fogged the inside the car