Hi All:
When I push the recirc air button while on AC (trying to cool down a boiling hot car) it seems to have no effect whatsoever. I don't hear any noise difference when I push the button (should I?)...I dont feel any difference in temp at the vents (outside temp is 100 degrees Farenheit, and no, I didn't put a thermometer to it).
How does one know if the feature is functional? Should I be able to hear something or feel a noticeable difference at the vents?

Thanks! Brian

__________________
Brian
1995 E320 wagon