Have recently noticed some possible symptoms of my AC/heater going out and want to see what you guys think I should check before it gets worse. It’s only happened twice, but want to nail it down before it develops more. I’ll turn on my truck, and absolutely nothing blows out from my AC — no matter what setting I put it on, or how high I turn the fan, it’s totally dead. But I turn my truck off, and turn it back on again and it works like a champ (both hot and cold) as if nothing is wrong. Is this the beginning of something bigger? If it’s any help, I replaced the actuator about a year and a half ago due to heater not getting hot.

For reference: 2010 XLT SuperCab 4.6L 3V 2WD

 

Bump

 

Might be your fan starting to go out. Check the AC fuses and make sure they are all connected correctly and not loose.

 

You could check the plug at the heater motor also. Unplug it and inspect it. I'm not sure what years but the connector would over heat and eventually burn out. Might be worth a look.