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Posts Tagged: external control valve

Diagnose Hyundai AC compressor with variable displacement and external control valve

Hyundai service bulletin #17-HA-002  for AC compressor with variable displacement and external control valve Hyundai has issued a service bulletin #17-HA-002 to address an AC issue where: • The AC does not get cold enough • The high and/or low sides show abnormal system pressure on the manifold gauge (normal pressure should be > 130-psi at idle on the high side with AC set to MAX) Diagnose AC problem with Hyundai AC compressor with variable displacement and external control valve 1. Start the engine, set the blower speed to level … Read More


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