98 Safari No air through Vents, only Defrost works

Hi,
I just recently purchased a 1998 Safari and it doesn't blow any air through the vents (with or without thr A/C). I can hear the fan(??) Only air gets through when I use the defrost mode. Could this be blockage?
Fuse? Fan Blower motor? Thanks for any help.
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So is it always blowing through the defrost no matter what position the dial is in, or it only blows when the dial is on defrost?
Steve

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Steve Mackie wrote:

Replace all of the vac hoses under the hot doghouse............
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Air only blows through the defrost vents. If I choose feet vents....it only blows through the defrost vents... Could it be vacuum hoses and is so do I need to take apart the whole dash...or just the "doghouse"?
Thx
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Check the vacuum line coming from the intake. It will be labeled "Accessories" on the emmision vacuum diagram.
Steve

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JAWS1967 wrote:

Dog house. Easy job took me about twenty mins on my 94 Safari. The lines become brittle and perforated from the heat. Use a knife to cut the old ones off where they connect to the small plastic pieces or you will break them. After all of the lines are changed you will notice a smoother idle as well.
A easy way to test it after is to find a big hill put the blower on the vents and floor it....after about 45 seconds if it goes back to the defrost vent you still have a line leak.
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