It’s a 2013 E150 base model, V8 4.6L.
After a few hours of initial research, I did read that it is likely the mode door actuator and I still suspect that to be the issue but I have not been able to find any solid information as to where it is located. As I said before, I did replace the blend door actuator but realized afterward that doing so was pointless as the temperature selection knob has been working well (hot air when selected, cold air when selected, and AC when selected).
I decided to purchase the Haymes repair manual hoping it would have information on the different actuators and their respective locations, or even a diagram detailing where the handful of tiny vacuum hoses used for the climate control run to and from/what each color hose controls, but no luck there. I also spent hours searching online for similar information but haven’t been able to find anything there either.
That being said, is there any online resource that I could use to find what I’m looking for (specifically a vacuum hose diagram and related information)? If not, do you know where the mode door actuator is located? My guess is that its behind or under the dash and if I need to remove it I will but I’d prefer to keep the disassembly to a minimum. Lastly, even when I’ve searched for “mode door actuator” and similar terms on different auto parts websites, I’ve only come up with the blend door actuator (which I’ve already replaced) so I don’t even know what the mode door actuator looks like, making my attempt at searching for it come up empty.
Thank you again for any help you can provide and please be safe out there with all this COVID-19 stuff hitting the fan.