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You need to pop your hood and check your vaccum lines should be by the passenger side should be little tubes and stuff with a TT piece maybe running by your engine or possibly into your firewall !! - Phat-Boi

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Q: I have a 93 mustang.ac is blowing cold out of the defogger vents and floor vents under dashbut no air is coming out of the four vents on the dash.What should i do?
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