Does anyone know if the recirc door is normally closed or normally open? I checked vacuum from the firewall to the switchover valve block and all that is okay.

I messed around with a vac gauge at the switchover valve and can't find a problem. If I know if the door is normally closed or open I might be able to put something over the recirc pod to feel of the linkage to ensure that it is actuating, but I need to know if it is closed or open.

This one is getting baffling to the point that I'm afraid that I will have to pull the instrument panel just to see what's happening. Since the a/c pressures are perfect and the hose OUT of the heater valve is staying cold, I'm quite sure that the problem is fresh air instead of recirc.

Do any of the other doors have anything to do with this? If they do I can't figure out how.

Thanks for any help you can offer.

Have a great day,