my vectra 2005 1.9cdti 150bhp has recently started squeeking from the air conditioning compressor, i ruled out all other pulleys, it seems to be worse when it has been cold/raining and quietens down after 5-10 miles but over the last two weeks it has now gone constant, it sounds like a slipping fan belt but the sound remains constant ie it dosnt rise much with engine revs, if i turn on a/c the noise goes a little.

my question is if i find an identicle compressor in the scrappers is it possible to just remove the clutch pulley and is it possible to replace it on the car as i dont really want to remove/swap out the compressor as i will lose all the gas ect.

if i spray wd or similar onto the pulley the noise increases.

Any help appreciated.