AC problem

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07-13-2004, 08:56 PM

pat hand

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AC problem

AC comes only out the defrost duct. Looking for easiest way to tblshoot. Is it vacuum, electrical, door actuator?

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07-15-2004, 07:25 AM

powerstroker250

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Vacuum problem.

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07-15-2004, 07:00 PM

f350xlt460

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defrost is the default position for the door plenum. get a vacuum diagram and trace out the problem

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07-15-2004, 07:00 PM

slc10844

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Check for a broken or disconnected hose. Do you hear a hissing noise inside the cab? If not look under the hood first.

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07-15-2004, 09:11 PM

Kwikkordead

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I echo the previous posts, look for a broken vacuum line.

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