If it's only working on setting 4, and NOT on 1/2/3 then you need to replace your Blower Motor Resistor. Is it a vacuum leak or what? and where in the car is the broken/damaged … 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. No matter what position the dial is on the air refuses to blow through the front vents for the driver and passenger. 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 How do I reconnect or fix the vents so the ac blows through where it is supposed to? The A/C and heat work fine but only blows out the defrost vent on the dash. 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 Vacuum Pump (Source on Diesels) has no power to it. 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. 2003 taurus: ac only blows thru defrost vents 3.0 v6..hose 2003 taurus ac only blows thru defrost vents 3.0 v6? Jun 15 2013, 9:35pm I discovered today that I only receive air through the defrost vents. I just need to know where to look and what to look for. I installed a new blend door actuator thinking that was the issue but it wasn't. There is no air what so ever coming out of the passenger facing vents from the dash. the side vents are functioning properly. 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. My 2004 F350 diesel started blowing air out of the defrost vents only. The Rear A/C does the same but only through the Floor vents. It doesn't matter which vents are chosen in control. It would then work when I got back on the gas. 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 - … The A/C blows ice cold, but I'm getting most air flow from defroster vents at base of windshield. My AC is only blowing through the defrost vent and the temperature control doesn't do anything. The air conditioning works but only blows out the defogger near the windshield. It sometimes blows regularly when I have the AC on low. Hi, I have a 1999 Honda Accord Ex. I'm wondering if something is simply stuck or if it's a bigger issue? 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. I was wondering how you fix the AC blowing out of the defrost vents? 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 My 2006 Mercury Grand Marquis only blows air through the defrost vents. Actuator works fine. 2003 durango air vents only on defog I'm having a similar problem with my 2003 durago slt. My 2004 F250 was blowing A/C out of defrost vents only. But about a week ago air just stopped coming out of all the vents and would only come out of the defroster vents. Fan motor works fine, Tem switch works fine, but the other is stuck blowing out in defrost no mater which vent you turn to. For some reason my truck has recently started only blowing air/heat through the defrost vents, should i check for fuses or what? Dig through Cadillac Tech Tips for info on your HVAC and air blend/mode doors. Heater working but only blows out front vents. I replaced the Control After re-installing it I found my AC was only blowing through the top vents. Bring the vehicle to a The air (heat and A/C) only blows through the defrost vents but not the main vents. Won't switch to floor Or foot vents . 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 In every position, from 'vent' to 'AC' to 'Max' it blows out of the top defrost vents. It started with my AC not working while I was at a stand still, say in traffic. AC and Max AC. All pointing to fuse #28. One problem, it only blows through the Defrost vents not the vents in the dash. What could have caused this? How do I determine what the cause is? For both of these options the AC only blows through the dash vents. It was working fine yesterday & this morning it started acting up. Ac is working but blows through defrost. Found this post, ordered the pump online at www.ford-parts.com for $95 plus $8 shipping, it … When you turn on the AC , it only blows air out the defrost vent no matter where you put the selector. I have a '14 Malibu LT that the AC just started to blow through the defrost vents only. Had this happen before, vacuum line leak on the SOF 4x4 system. 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 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. If you have air flowing only through the vents with no defrost or floor, this door is failing. I have a 1998 Windstar thats A/C blows cold as ice. Fan Only Blows Defrost, Won't Change To Floor Or Vent. Cooling, Heating, Ventilation & A/C - Air conditioning blowing only thru defrost vents - My A/C is blowing cold but only thru the defrost vents. If anyone has had this happen before I would appreciate some help because I do not know how to fix this problem. 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. AC blows cold air through defrost vents only but will not come out dash vents. 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?? A/C only blows through defrost vents. So not really jeep savvy yet and trying to figure out why when I cycle through all the heater options i.e. In my experience any Ford vehicle with Air conditioning uses vacuum to change the vents, anytime there is a leak or ina diesel the electric vacuum pump quits they always default to the defroster. I checked the fuses, and was at a loss after that. A small amount from side vent and little to none in the center dash 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. My '95 GT's A/C now only blows throught the defrost vents. The AC only blows through the defrost vents on the dash. Fuse chart shows # 28 which serves the back-up lamps too, which are not working. I have a 2004 GMC Sierra 1500 with the duel climate control A/C. No heat to feet or defrost. A/C blows through Defrost 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. 2001 Ram 2500 QCLB 4x4 Auto. Ac will not blow through center dash vents. 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 Oddly enough, a few days later, the problem managed to self correct. 3.54 R&P, Camper/Trailer package. 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. Fuse good. 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