Question about 1991 Ford Tempo 4 Door
All the vents are connected, a vacuum controlled flap diverts the air to each area.
With that said I would say that either the vents are obstructed by something like a rat/mouse nest or that your vacuum controlled flap is stuck or does not have enough vacuum to move it.
A vacuum leak will sound like a constant hissing sound.
Posted on May 04, 2010
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Posted on Jan 02, 2017
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