I was thoroughly cleaning truck (wash/polish) so I moved it into the garage after spraying off engine where it sat for 2 days. I finally finished the coats of polish and decided to start it up and heard an irritating noise. I was thinking the belt idler pulley but figured out it was lower down. So it has to be the compressor. It sounds like something rusted up maybe. It's a metallic sound that varies with engine rpm. Not quite a sqeal. Any ideas if that is correct and maybe how to fix it? I sure would appreciate any help. Makes the truck sound like a POS. Help!

 

No ideas? Oh well.

 

does your a/c work/blow cold air?

 

Yeah...works fine. I'm at a loss. You think the clutch might have some rust dust on it? Or something like that anyway.

 

No clue, my belt started squeelin its *** off a few weeks ago and made some god awful noise as well. My a/c will turn on, I can hear the compressor click on but it will not blow cold air. Ive been too lazy to take it back to the dealership.