Forgive my ignorance, but how do you know compressor is shedding metal? Is it because of the bad scroll valve? Users on the saturn forums have replaced just their scroll valves and never said anything about the compressor being bad. Is it because of the age? Do all compressors that old start sheddin...

2004 Saturn Vue 3.5L V6. 134K miles on it. AC does not cool well at idle and from what I have been reading I might have a bad scroll valve in the compressor. It cools well enough when at driving speed and even better at 2k RPMs. I can live with the poor idle cooling, but I see what looks like a leak...