dv69vet

Is there an outside vent door for NON a/c cars? If so, where is it?

Is there some kind of filter that may need to be changed to get clean air into the interior of a coupe that is a NON a/c car?

Asking cause I smelled like exhaust fumes after a ride and the wife says I fix the problem or she won't ride in it.(maybe a good thing but not for a marriage)

Or, what else should I look for when shooting this situation?
Thanks in advance.

Don Rickles

This guy was stinky too!
Might help?
https://www.corvetteforum.com/forums...mell-good.html

Alan 71

Hi dv,
Your 69 has a system called Astro Ventilation.

Starting with 68 cars Corvettes no longer had a 'vent' window to open for fresh air.
A system was designed to bring fresh air into the car through the round vents in the dash panels and kick panel vents and to discharge it through the plenums and vents in the rear deck.
The system was passive... no blower.
The plenums have a vacuum operated door that opens and closes them. The hot/cold thumb wheel on the heater/defroster controller opens and closes the doors... closed when the heater is on so the car interior warms up.

You might want to check the condition/operation of the dash vents and kick panel vents, and also the operation of the doors on the rear plenums.

Regards,
Alan

Dynra Rockets

A filter will not get rid of exhaust fumes. As stated above there is no cabin filter in a 69 anyway. You either have an exhaust leak or an overly rich fuel mixture if you are smelling "fumes".

Don Rickles

Many times after a car has taken apart, insulation panels or mats never seem to go back in properly. Leaving holes/gaps, where air and gases are now able to enter the drivers compartment.

But, if you read the maintenance schedule you will find, that the filter on the evap canister is meant to be replaced annually IIRC. I'm certain most never are replaced or cleaned.

Bergerboy

You can check the function of the rear vacuum door easily.
Sitting in the driver seat with the engine running (you need vacuum), reach back and fish your hand under the rear shelf to find the door itself. With the right thumbwheel of the Heater control on full Cold (top), rotate it towards Hot (bottom).
The system is designed to close the door when you dial off of full Cold setting (thus preserving cabin temp in colder weather).
If it's not functioning, I'd suggest checking the vacuum hose that runs from that thumbwheel control, back along the right side of the tunnel, over the bulkhead wall to the left side under-shelf area, where it connects to the door actuator.

dv69vet

Wow, I read many of articles on this forum about the smell problem. Thanks for the feedback Alan, WB, and DR. Seems that I need to see what the original owner has done so I can try and fix the problem. Alan the pic did me well thanks. So up on the lift does my 69 go and I try and see what is going on.

dv69vet

Great info Bergerboy. I will test it the doors out. Thanks for the way to test.

MelWff

your title states A.I.R. and then you inquire about interior ventilation. The A.I.R. is the air injection reactor system and is basically the air pump on the engine and other components and has nothing to do with interior ventilation.

dv69vet

Yes MelWff, you are correct. After submitting the post, and being a novice of vets I realized the mistake but could not figure out how to change the title. Thanks for pointing that out.