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Bad blower motor or bad fuse. Check the fuse first it is a cheap fix it is the problem.

I Have 1996 Mustang and mine was blowing out the defrost and it ended up being vaccum line. 1/8 vaccum line located on the firewall I followed it across the engine to find, it broke from the boot it was plugged into. I pulled the old line out of the boot and plugged back in and it worked

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โˆ™ 2015-07-17 17:54:37
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Q: Why would no air come from the dash vents on a 1991 Ford Mustang even with the AC on?
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