A/C stopped working, compressor still engages.

My A/C suddenly stopped blowing today. I immediately went to check the compressor and it engages just fine when the A/C switch is clicked on. But still nothing blowing out of the vents running heater or A/C. Any tips would be great!

***Just noticed the check engine light is also on, I don't know if I may have caused this though because I pulled the "A/F HEATER" relay by mistake and noticed the check engine light afterwards.***

 

The A/F heater is probably the heating element for the O2 sensor, definitely would cause your check engine light.

The compressor is independent of the volume of air through your vents. Your issue is with the blower motor circuit, the blower itself or the controls. If you turn the fan all the way to high will it work? That's usually an indication of a bad blower motor resistor.

 

This

 

I forgot to mention I tried the A/C in each switch position and still nothing.

Relieved to hear the check engine light is likely due to me being a dummy now I'll need to figure out how to clear that alarm.

 

With the fan switch on try tapping on the blower motor housing with a screwdriver. If the motor starts to spin when you hit it then it probably needs a new blower motor

 

From what I gather from your comment, it must be the blower motor if the A/C doesn't blow in any of the switch positions? Is there a way to further troubleshoot to be 100% certain?

 

UPDATE:

Disconnected and reconnected the blower motor connection while truck was off. Turned the truck on and the A/C is back to normal. ‍♂️ It appears I have gremlins.

Check engine light also cleared.

Thanks for the help!

 

Look closely at the blower motor connector and see if the terminals are burned