So I replaced my heater core a month back or so and my heat works great again. I also replaced the blend door with a dorman model while I was in there. Well now it's starting to heat up again here in Colorado, I tried using my A/C and its only blowing hot air. I popped the hood and I can see and hear the compressor kicking on, but still no A/C. I dont mind rolling with the windows down, but my daughter doesnt like a lot of wind in her face and on the highway it gets especially bad for her. Any ideas? I cant tell for sure if the actuator motor is any good anymore. That could be a potential problem i guess. Any help would be awesome guys.

 

UPDATE:

Out of curiosity, I kicked Max A/C on and felt the condeser lines coming out of the firewall and they are icy cold. Possible stuck blend door? Actuator motor? When i go from vent on 90 to Max A/C on 60 i can hear a noticable sound difference from the passenger side dash. I cant hear the door actuating, but i can hear a difference in the "whooshing" coming from the blower. Im lost

 

When you say "When i go from vent on 90 to Max A/C on 60" it makes me think you probably have electronic controls? Knowing this info is needed, as it has its own issues.

 

Probably posting in the wrong section. Should be in GD, since we talk about trucks here. Who knows which vehicle he's talking about, -or what year. Could be a home thermostat problem.

 

My bad lol its a 2002 f150 screw. Electronic controls. Got it apart and turns out that when i put in the new blend door a month or so ago, i didnt have the climate control set to AC so that the door was shut on the heater core. It was set to heat so when i installed it the door was wide open and got wedged against the side of the box the heater and evap core sit in. Cut the plastic behind the glovebox and a small section of the heater/evap core box and popped it loose with a flathead. Works fine now.