i just got a call from the shop telling me that my ac clutch is bad, which i expected, but also that they have to replace the compressor too. is there any particular reason why a compressor needs to be replaced just because the clutch is bad? the only reason they have given is that the compressor is "most likely bad as well" and that they can't warrenty the repair if they only replace the clutch. the system is fully charged, and still blows cold air. are they trying to pull a fast one (to the tune of $1000) or am i off base?