Air only blows out vents. I have replaced the actuator for the mode selector. When I turn on the air conditioning or the heater it only blows out of the defrosters. Ford Taurus, Mercury Sable, Ford Taurus SHO. 2000 Ford Taurus SEL ac/heat blows through floor and defrost vents only 2000 Taurus SEL with climate control option blows heat and ac through floor and defrost vent only. We use cookies to give you the best possible experience on our website. Causes? White/black on passenger's side accessible by behind glove box. SOURCE: 2006 Ford Crown Victoria HVAC only blows thru windshield defrost You have a vacuum leak. I think it might be a vacuum hose leak but I don't know where the location of the hoses to check are. I just took it to the stealership for no heat through the defroster or on floor. I Have A 2001 Ford Taurus. When I Turn On The Air Conditioning Or The Heater It Only Blows Out Of The Defrosters. 2015 Ford Taurus FWD V6-3.5L Vehicle > Heating and Air Conditioning > Air Door Actuator / Motor > Service and Repair > Removal and Replacement MODE DOOR ACTUATOR - DEFROST/PANEL/FLOOR DOOR 412-01 Climate Control 2015 Taurus REMOVAL AND INSTALLATION — Defrost/Panel/Floor Door Mode Door Actuator Item Part Number Description My 2000 Ford Taurus will not blow air from the front or foot vents, only the defrost vents work. AC only blows through vents, not defrost-floor etc. My 2000 Ford Taurus has no air blowing from the front vents or foot vents, I can hear the motor running when I switch the air to the front vents, but air will only blow through the defrost vents. Sounds like you might have a vacuum leak or a bad control switch or bad blend door actuator (if the system is vacuum operated). Air flow & temp can be adjusted and directed to floor or defrost vents but nothing out of dash vents. ... or if the valve in the dash is leaking that vacuum then it will default the diverter door to blow air out the bottom and top vents only. Air only blows thru dash vents, no defrost or floor heat... Jump to Latest Follow 1 - 19 of 19 Posts ... no defrost My 2011 Ford King RAnch Diesel F250 has been a great truck compared to my 2008! Re: 2001 Ford Taurus air blowing through defroster vent only Post by akcarrasco » Thu Jul 14, 2011 8:55 pm The vaccum line is in the engine compartment at the upper part of the firewall on the passenger side, they are some fairly small hoses that are made of poor quality polymer they get brittle and break easily. Same - Answered by a verified Ford Mechanic. No defrost or lower vents work. Have full fan and temperature controls through entire range, just will not divert air flow to defrost or floor. Defrost is the default postion(no Vacuum). 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