2002 T&C A/C sounds like its squeaking/chirping at idle in D only. Doesnt do it while under speed or in N I just threw in a medium can of R-134 w/oil charge but it didnt help, although it is blowing colder now...Do the electric clutches make this noise? Its not internal, deffinantly down there where the compressor is and when you turn the A/C off, it stops. I also suspected the alternator decoupler last week and welded it solid, no change.. is that causing the chirp? That decoupler is good for nothing in my opinion. The Gates site tells you to replace the decoupler with every belt change! Uh, thats a $45 part and takes a special tool to unscrew it.