a/c cutout

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>
>
>The valve was supposed to
>retain vacuum during wot to keep the door from moving.
>Again we are not talking WOT operation! This occurs at part throttle.
>Uphill. downhill. no hill.
>
>Jon
>
  A one way vacuum check valve does not know the difference between part
throttle and full throttle. The WOT a/c cutout that I was talking about
is when the power to the compressor clutch is temporarily cut to
disengage the power robbing effects of the a/d system. The check valve
keeps vacuum applied until the controls are turned off or until the
truck is shut off.
Patrick

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