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Old 11-12-2011, 07:44 AM   #8 (permalink)
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Join Date: Nov 2010
Location: US
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Chief - '06 Pontiac Grand Prix
90 day: 23.13 mpg (US)

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On my 1975 Camaro, I had installed a vacuum switch that simply opened the circuit to the compressor clutch. I didn't have any problems with the AC from that setup. As the clutch normally cycles on and off, I don't see any reason why it should cause a problem. But then the AC setup was much simpler than some of the newer systems.

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