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1999 Ford F-250 Super Duty Question: heater woriking but not getting air through vents. Hear blower on.

 

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Visitor, 7.3L V8 Diesel Turbo, Dearborn, MO, December 31, 2010, 18:34

My heater is working. I can feel hot air. I can adjust the blower and hear it working, but air is not coming through vents no matter what the setting. I think it is a vacuum issue but cannot narrow it down.

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  • Answer #1

    December 31, 2010, 21:08
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     Master

    It is definitely a vacuum issue. Most likely a hose disconnected under the dash or under the hood. Look under the dash - both sides - first.

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