Gents: my ac seems to start up and blow cold but about 60 seconds into it, the fan starts to slow down... and eventually stops. I replaced the motor not too long ago - I’m entertaining that it is the blower motor but if I should down the power, start her up, she will come back on and seemingly blow hard.

I swapped out resistor - no change.

could it it be my dash control unit? Would love your thoughts !

 

My thought would be the control unit. One way to check would be watch the voltage on it when it is running to see if it tapers off