No heat to feet or defrost. Actuator works fine. If you have air flowing only through the vents with no defrost or floor, this door is failing. I assume it's a vacuum line that probably got disconnected. I was wondering how you fix the AC blowing out of the defrost vents? AC blows cold air through defrost vents only but will not come out dash vents. It was working fine yesterday & this morning it started acting up. Dig through Cadillac Tech Tips for info on your HVAC and air blend/mode doors. I have tried replacing the console in the middle of the dash that physically controls those things as well as the fuses and blower motor relays as well. After re-installing it I found my AC was only blowing through the top vents. Fan Only Blows Defrost, Won't Change To Floor Or Vent. It doesn't matter which vents are chosen in control. So not really jeep savvy yet and trying to figure out why when I cycle through all the heater options i.e. It would then work when I got back on the gas. A/C blows through Defrost vents. Heater working but only blows out front vents. Is it a vacuum leak or what? Mode Door 2: When mode door 1 is set to divert air away from the vents and into the second stage of the system, door #2 chooses whether air The Heat/AC in my car is only blowing through the vents under the windshield (The ones that would come on only if you turned it to defrost), but no matter what setting I turn the dials to, it won't come out the main cabin RE: AC/heater only blows out defrost vents IP: Logged Message: I have a 2002 Dodge Dakota - 3.9 L and in June of 2007 I had only air coming out of my defrost vents, so I had the vent control motor replaced and it was working If it's working on 1/2/3 for a little while, and it varies how hard the air comes out of the vents, then the Blower Motor AC and Max AC. p.s found broken hose from fire wall, where does it go? Is there anyway to upgrade the in-dash unit to allow you to turn on and off the AC compressor while independently selecting, floor, foor / vent Under heavy acceleration or engine load, the unit stops I checked the fuses, and was at a loss after that. For some reason my truck has recently started only blowing air/heat through the defrost vents, should i check for fuses or what? I'm wondering if something is simply stuck or if it's a bigger issue? My 2004 F250 was blowing A/C out of defrost vents only. IF your car uses vacuum for mode control, check the line that comes from the throttlebody or intake manifold to the upper passenger side of the firewall - a vacuum control line. A/C only blows through defrost vents. I just got into a car accident yesterday and got an auto body shop to look at the damages. Jun 15 2013, 9:35pm I discovered today that I only receive air through the defrost vents. How do I reconnect or fix the vents so the ac blows through where it is supposed to? My 2004 F350 diesel started blowing air out of the defrost vents only. If anyone has had this happen before I would appreciate some help because I do not know how to fix this problem. One problem, it only blows through the Defrost vents not the vents in the dash. and where in the car is the broken/damaged … Ac is working but blows through defrost. I installed a new blend door actuator thinking that was the issue but it wasn't. 2003 taurus: ac only blows thru defrost vents 3.0 v6..hose 2003 taurus ac only blows thru defrost vents 3.0 v6? The A/C and heat work fine but only blows out the defrost vent on the dash. Re: 01 - AC issue - blows out of defroster Tell him you have a vacuum leak on your HVAC system, if your lucky it's under the hood, if your not it's in the dash. Ac will not blow through center dash vents. Re: AC/Heat Only Blows out Dash Vents Post by dmoto » Tue Dec 10, 2019 7:55 pm Having the same problem, regardless of the position selected, air will only flow through dash registers. A small amount from side vent and little to none in the center dash vents. 2001 Ram 2500 QCLB 4x4 Auto. I have a 1998 Windstar thats A/C blows cold as ice. For both of these options the AC only blows through the dash vents. But about a week ago air just stopped coming out of all the vents and would only come out of the defroster vents. It sometimes blows regularly when I have the AC on low. All pointing to fuse #28. Won't switch to floor Or foot vents . I have a 2000 Winnebago Adventurer on the Ford F53 chassis that will not distribute the AC air out the dash vents.....only sends it out through the defrost vents. Found this post, ordered the pump online at www.ford-parts.com for $95 plus $8 shipping, it … AC only comes through the defrost and floor, and heat always comes out the floor vents all the time.....wierd Richard I don't want any superpowers, just diplomatic immunity - … AC Only Comming Out Defrost Vents Quote Post by islandtuner242 » Sat Jan 22, 2011 1:07 pm Ok i've got a 1990 n/a that's only blowing out of the defrost vents and no other ones can anybody help?? It started with my AC not working while I was at a stand still, say in traffic. 2003 durango air vents only on defog I'm having a similar problem with my 2003 durago slt. No matter what position the dial is on the air refuses to blow through the front vents for the driver and passenger. Bring the vehicle to a The air conditioning works but only blows out the defogger near the windshield. I have a 2006 pt cruiser and the ac works fine but only blows through the top vents (defrost) it dont matter where i put the knob at it only blows through the defrost on top i can turn it to blow through vents in front or bottom by legs Oddly enough, a few days later, the problem managed to self correct. Before replacing Heater Control Unit, it would only blow hot air from front vents- With this replacement it will now change from cold to hot and the air flow pressure does change from the front vents when changing the setting dial but there is still no air at all to feet and defrost. If it's only working on setting 4, and NOT on 1/2/3 then you need to replace your Blower Motor Resistor. the side vents are functioning properly. My '95 GT's A/C now only blows throught the defrost vents. Cooling, Heating, Ventilation & A/C - Air conditioning blowing only thru defrost vents - My A/C is blowing cold but only thru the defrost vents. The Rear A/C does the same but only through the Floor vents. (defrost, upper dash, feet) I only get air coming out of the defrost vents....and of course in the off position everything is off. I have a 2004 GMC Sierra 1500 with the duel climate control A/C. Fuse good. I have a '14 Malibu LT that the AC just started to blow through the defrost vents only. The AC only blows through the defrost vents on the dash. Had this happen before, vacuum line leak on the SOF 4x4 system. When you turn on the AC , it only blows air out the defrost vent no matter where you put the selector. Fan motor works fine, Tem switch works fine, but the other is stuck blowing out in defrost no mater which vent you turn to. I just need to know where to look and what to look for. Hi, I have a 1999 Honda Accord Ex. In every position, from 'vent' to 'AC' to 'Max' it blows out of the top defrost vents. I replaced the Control Fuse chart shows # 28 which serves the back-up lamps too, which are not working. It started to do this ever since I got the intake manifold replaced.I have got it checked by a trusted mechanic and he said the lines are good. My AC is only blowing through the defrost vent and the temperature control doesn't do anything. How do I determine what the cause is? The A/C blows ice cold, but I'm getting most air flow from defroster vents at base of windshield. The air (heat and A/C) only blows through the defrost vents but not the main vents. tried to change it to the floor or the dash vents, no deal. Have tried a 2nd control unit in dash - Chevrolet 2004 Silverado question Vacuum supply starts on the drivers side of the engine. There is no air what so ever coming out of the passenger facing vents from the dash. 3.54 R&P, Camper/Trailer package. What could have caused this? Vacuum Pump (Source on Diesels) has no power to it. 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