I have a 1992 nissan stanza which has been fairly good to me. I have been having problems with the A/C compressor or pulley. The A/C runs perfect as far as cooling but make a lound whining noise. The belt tension is adequate from what I can tell. I did inspect the compressor visually when car and A/C was on and noticed the pulley turning fine but would intermittently slow down to almost a stop causing the noise. I dont know if this is equipped with a cluth that I can change or am I doomed. Please help. Thanks. LS