Forgive me for not going back and sorting through 21 pages, but is your AC system an aftermarket like Vintage Air? If so, all aftermarket systems cycle the clutch. For that matter the POA replacement tube sold by Old Air and others also cycle the compressor. Only a stock GM system runs the clutch all the time when the AC is on.
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Mick Batson
1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 Catalina Safari Wagon.
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