Thanks for the inputs.
My concern is that it has already generated junk. It has been doing this for some time.
From what I have read here, other forums and from compressor suppliers it is nearly impossible to flush these systems well enough.
The A/C cools just fine but there is a noise coming from the compressor.
This noise occurs only when the A/C compressor clutch is engaged. I have put a stethoscope on it and it seems to be coming from the front end of the compressor.
At idle it seems to be clicking once per compressor rev. The...