Newbie here. I've finally had enough of hot air only. It will be cool outside and for some reason I cannot get cool outside air to come through my vents. Is there a flap or something that could be stuck? If you have some trouble shooting ideas or maybe a thread that has addressed this issue, it would be much appreciated. Thanks!
The vents in an AC car are actuated by vacuum. A canister (vacuum accumulator), connected to manifold vacuum, is located under the left fender. The ac/heater controls switch that vacuum to vents actuators.
Below is a '68 AC vacuum and wiring diagram that may help you diagnose the system. Don't know if there are differences in the other two years. And you can find a parts diagram here.
After I've been on the road for an hour or so the engine heats up the firewall, hood, cowl and everything else forward of the rear bumper. My vents work well but the air is always hotter than the outside air due to engine heat. I wish they would have kept the 67 vent windows.
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1968 400 coupe - R/A clone (Blue Pearl) (for sale) 1968 350 - 4 speed 'vert - 400 clone (the beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 1967 326 convertible - Sold 2008 Durango - winter beater 1980 T/A SE Bandit - Sold 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1976 T/A - 455, 4 spd. Newest hatchling in the nest.