My 75 Mav with factory A/C blows a small amount of air out the center vents, sin=me out the side vents but most of it blows out the floor vent. How can I make it blow out the center vents? Thank you Texasjack
The ac/heat system doors are all controlled by vacuum. Make sure you have the vacuum canister in place and it holds vacuum. Most likely though, the vacuum switch is toast. They are notorious for falling apart. Do a search on vacuum switch. Should be lots of info on here.
