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  1. odd 'surging' noise from HVAC

    Range Rover Mark III / L322
    Maybe it's normal but it seems louder than it should... I have what I can only describe as a rising and falling rhythmic surging noise made by my HVAC system. It does not increase or decrease with fan speed. Only happens when the HVAC system is running Isn't very loud but is very noticeable...
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