Originally Posted by andrewwynn

Aux fan doesn't always run from AC on. Temp dependent.

Disconnecting the freon pressure sensor should spin the aux fan.

When my AC wouldn't work I had to replace my aux fan. I was able to get AC to work by manually engaging the compressor with my foxwell.

Can you see the inner part of compressor clutch turning? The two main possibilities are:

➀ clutch air gap too much and not engaging. (Click yes, spin no)

➁ variable displacement compressor stuck at zero.

Since revving makes a difference, I think it's 2. You get higher pressure than me once it kicks on.