71 Dart A/C car heater issues

Check this. My clip fell off that holds the actuator pin on the door. Would only blow warm air. You can see it with glove box removed right side.


Ok I will try this.

Bought a new 180* thermostat... to replace the old 180* thermostat. No change. I’ll try and see if the blend door does anything.

also, when the time comes, how does this ac vent mount? Is there supposed to be clips under the dash for screws to go into? I can’t see how you’d get a nut and wrench on the back side of dash to tighten. Thanks a bunch you all have great info here!2D9189B5-C8BD-4C4D-988B-425F19DA4A84.jpeg