In all honesty, I’m not looking to pull the dash/heater core/etc if I can avoid doing so but if need be, that’s what I’ll do. The told me it … I have a 2010 Ford Escape that was doing the same thing, ended up being the Air door actuator. Set the temperature control dial on Max Cool. I have a 2002 GMC Yukon that has the air only blowing through defrost and floor vents. You need:1) identify the problem as above (ie: no air (hot/cold) from ducts or windshield); 2) have someone scan the problem and identify which of the three is bad; 3) get your part with VIN number; 4) change, DIY or auto shop. Because I’ve had this issue for a while now and only recently decided to tackle it as summer is coming, I forgot to mention one other symptom that was occurring before the dash vents stopped blowing air: When I would accelerate while using the AC, the air flowing from the dash vents would drop drastically until I let off the gas pedal. 2007 GT 3.5 Coupe 65k AC or not, only blowing air through defroster and floor. Years ago this was controlled by vaccum lines, but now everything is electronic.... - … I have the same problem and actually there are 3 of those things. I recently had to get a new battery and this is when this started. Discussion ... that is not directing the air flow to the other vents. The actuator is a controller that opens and closes the flapper that direct the airflow from the fan . There are three of those actuators. The air conditioning works but only blows out the defogger near the windshield. defog or front or feet) anyways i can feel it turning so i know the actuator is working but the air … this problem just started yesterday. When the controller "sees" cool air it commands the blend door to change air vents. @rmarquez1958. buzz1 in Stockton, CA on . 1 on the passenger side and #2 is by the break pedal? It should blow through the floor vents. So, what happens is that if there is a vacuum leak in the system, the … None stay on very long they just keep switching back and forth. Start with the vacuum line and check valve. How do I determine what the cause is? It's stuck on the vents and I can't seem to find out why. My 2001 4x4 S-10 just blows air out of the dashboard vents no matter where the switch is. No heat to feet or defrost. I recently had to get a new battery and this is when this started. ... Air only blows through front vents not through the floor vents or defroster . The mode actuators in this vehicle are vacuum controlled so checking vacuum is the first point in the diagnostic routine. I know the blend door actuator that is located behind the glove box controls the temperature of the air flowing to the vents but are there other actuators (outside of the mode door)? Jump to Latest Follow ... a vacuum line was never properly sealed with a couple years later sprung into a bigger leak which caused the heat and air to only blow out of the defrost. How do I determine what the cause is? I was told by a freind to check the vac. Powered by Discourse, best viewed with JavaScript enabled, Air only blows out floor and defrost vents, Ford F-150 HVAC Control Vacuum Check Valve | Advance Auto Parts. have the same problem? I know there is often a faulty check valve on the vacuum line but are there other issues that can cause the failure that I’m experiencing? If its electric you may simply have a blown fuse or it could be a bad actuator, if its vacuum you would need to look for leaks in the system. My wife's 2002 Cougar will only blow heat or AC through the defrost vents. At first I thought it was the switch but when I switch to - Answered by a verified Ford Mechanic That being said, is there any online resource that I could use to find what I’m looking for (specifically a vacuum hose diagram and related information)? I am not getting air through. I have a 2011 f150 lariat 4x4. Relevance. Airflow … I have an '08 350 with less than 82K miles. I have a 2010 f-150. Started having issues with the blend door actuator located behind the radio so replaced that a couple months ago and fixed issue. There is a vacuum check valve somewhere in the hoses leading to the HVAC control unit. Having the same problem, regardless of the position selected, air will only flow through dash registers. Re: AC/Heat only blows through all vents, Help! It blows hot air so I don't think there is anything wrong with they heating system. Air only blows out of front vents (not from bottom heater or defroster) on 2002 Buick LeSabre I am only getting air to come out of the front vents of the dash. Any idea where to start looking? There’s a problem with the mode door(s) or the actuator(s). It is usually between the engine intake and the vacuum reservoir. Re: AC blows cold air in floor vents when set to top vents o Wed Oct 08, 2014 5:36 am NightHawk wrote: I tried that the other day and I couldn't feel any air flow down by my feet on my FFE with A/C with high fan and set for panel vents only. Where do the hoses lead to/what do they do? I have a 1991 S-10. Air only blows out the defrost on the dash. If you have air flowing only through the vents with no defrost or floor, this door is failing. We have a 2002 Cadillac Deville. Because when Ford put the “mode door actuator” on their vehicles it was notorious for failing for several model years and it was a real pain to get to. Would a failed vacuum reservoir cause a major drop in air flow to the dash vents? Air only blows through the defrost vents in my truck? Also, the heater core is working properly and shows no signs of failure/steaming/leaking. 3 Answers. I’m amazed that @Tester 's post didn’t ring a bell on my memory. now it doesn't matter if its hot or cold air, it just blows on the floor only. Often this is experienced after replacement of the battery. Blend door actuator works (can change temperature). I have torn apart the interior panel and disconnected the cables and worked them manually (no help). Why would air only blow out the floor vents and the two outside dash vents not out the center dash vents or the defroster no matter what setting the Heat and air controls are on in a 2003 Ford Taurus? Already tried to reset the ac module. Monday, April 23rd, 2018 AT 7:26 AM. This 1999 Ford E150 van came in with the complaint that the a/c would only blow out of the defroster. I may have to do that eventually but I’d like to explore less involved options first and narrow it down from there…. I have a 2001 Mercury Grand Marquis and the A/C will not blow out of the vents. There were several new part numbers (due to redesigns) on the HVAC case. 12/01/2018 by My blower speed works fine. 1 Answer. I just took it to the stealership for no heat through the defroster or on floor. Those are very prone to fail. To diagnose the problem, press the MODE (VENT/FLOOR) button several times. We have a 2002 Cadillac Deville. I have a 2007 Dodge Grand Caravan. The dash vents are the only vents that work. During battery replacement, the … I have a 2004 GMC Sierra 1500 with the duel climate control A/C. Re: ac only blows from floor vent,does not blow through... You may need to pull the battery cable to clear the memory codes. Air only blows out of front vents (not from bottom heater or defroster) on 2002 Buick LeSabre I am only getting air to come out of the front vents of the dash. Roberto Marquez I suspect it is the mode door actuator but I have no idea where that part may be located in the van. 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. I have the same issue with my 2002 TJ and only the top 2 fan speeds work. Classic signs of a vacuum leak in the HVAC system controls, assuming your system is vacuum controlled (you haven’t told us the year of your van). I get good heat and air conditioning from my front vents, but when I select floor or defrost vents, the air still only blows from front vents. - Oldsmobile 1996 Ninety Eight Regency question My question is this: which part controls the vents in which the air flows? The heater blows hot air and the AC blows cold air but it will only come out of the dash, no other place. Hope this helps, 10/17/2017 by The mode actuators in this vehicle are vacuum controlled so checking vacuum is the first point in the diagnostic routine. Is there another term for “mode door actuator” that Ford may use for the part? Not through vents. Any suggestions. No filter is perfect, so you will still have some particles get through. As stated in the title, I am only getting air blowing out of the defrost and floor vents but not the ones in the dash. . 1 Reply. Thank you so much. Had one mechanic look at and he replaced the blower motor which did not fix problem but another story as I was pissed they ripped me off as it did not fix problem. My heater won't switch between defrost, floor heat or vents. No defroster air or air going to the floor. 2002 Tahoe only blowing air through defrost and floor vents Discussion in ' Technical Discussions ' started by Cali_02Tahoe , Sep 10, 2008 . I have installed a new blend door actuator (at the passenger side) and realized after the fact that wouldn’t have helped my issue. There are two, one that controls hot/cold, and one that controls where the air flows. bea_atine_49. Not through vents. Air only blows out the defrost on the dash. Air will not blow from air vents it only blows from the defrost vent. Also, amongst hours upon hours of online research, I cannot find any information regarding the mode door actuator, the location of it, or a diagram of the vacuum hoses that have to do with the climate control for the vehicle. I’d really like to avoid having to do that and possibly end up finding out that the vacuum hose and check valve are in working order. This 2005 GMC Sierra came in with the complaint that the air will only flow from the defroster vents, regardless of where it is commanded to. which could be in the lines to the actuator or the actuator itself . I have installed a new blend door actuator (at the passenger side) and realized after the fact that wouldn’t have helped my issue. What happens is that it warps, causing the doors to stick and not move or move erratically. I am not getting air through. These are usually located behind the dash. Categories Arts & Humanities. Air only blows thru dash vents, no defrost or floor heat... Jump to Latest Follow ... Ford King RAnch Diesel F250 has been a great truck compared to my 2008! Ford F350 AC only blowing through defroster vents. I have heard some people say it is probably a vaccum hose issue. Roberto Marquez, © 2020 iFixit — Licensed under Creative Commons — Privacy — I also spent hours searching online for similar information but haven’t been able to find anything there either. The one that was broken for me was the one that controls where the air flows, which was located on the drivers side next to the break pedal. 2015 Ford Taurus - Heat blows through defrost only 3 Answers. Ford A/C :: Cold Air Only Blows From Defrost And Floor. There is just no air from floor vents or defroster. This is under the dash on the passenger side . How do you get your part number using your VIN number? What could that be? Has anyone ever come across this problem or have any ideas? Owners have reported several instances of the air conditioning not blowing through main dash vents, or only blowing through the floor and defrost vents. I can only get air to blow out of the defroster vents or the floor vents, no matter if i use heat or A/C. So there are two door actuators in 2010 Ford Escape? My blower speed works fine. I have the same issue on my 2008 Ford Escape. SURESS NOLAND ... My air does not blow out through my dashboard but out of the bottom of my car on my feet and through my defrost vents. 8 years ago. See More 2001 Dodge Ram 1500 Questions. 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 goes to the defrost vents to the windshield or out through the floor vents in the passenger and driver’s side footwells. Lastly, even when I’ve searched for “mode door actuator” and similar terms on different auto parts websites, I’ve only come up with the blend door actuator (which I’ve already replaced) so I don’t even know what the mode door actuator looks like, making my attempt at searching for it come up empty. Had one mechanic look at and he replaced the blower motor which did not fix problem but another story as I was pissed they ripped me off as it did not fix problem. As stated in the title, I am only getting air blowing out of the defrost and floor vents but not the ones in the dash. air only blows through defrost and floor vents. Air only blows out of front vents (not from bottom heater or defroster) on 2002 Buick LeSabre I am only getting air to come out of the front vents of the dash. I would appreciate any help I can get on this issue as I would like to get my A/C working ASAP! There is a vacuum hose splice connector under the hood on the passenger side of … Continue reading "1999 Ford E150 Air Only Blows Out The Defroster Vents" 2 Posts . Community Experts online right now. Had one mechanic look at and he replaced the blower motor which did not fix problem but another story as I was pissed they ripped me off as it did not fix problem. Air only blows on floor vents, Air only blows on floor vents, (2001 Dodge Ram 1500) cant get it ti switch to defrost nor dash . 21,873 Answers. Thanks, Trap. I have a 2002 GMC Yukon that has the air only blowing through defrost and floor vents. Guess the door was slightly slightly stuck since the defrost is used only on cold months. The A/C and heat work fine but only blows out the defrost vent on the dash. Otherwise, the controller could have failed or something with a blend door. I have installed a new blend door actuator (at the passenger side) and realized after the fact that wouldn’t have helped my issue. I’d think so but would that also cause air to barely blow out of the same vents when not using AC and/or heat? My 09 Enclave had this issue, and indeed it's a blend door problem. The 2008-2012 Ford Escape features a revised front and rear fascia and restyled LED tail lamps. No Air Coming From Vents. I didnt want to have to take it to the dealer for them to over charge me. The air that flows through the system deposits small particles … Start by pulling a vacuum on the line to the HVAC and see if it holds. What if I replaced blem door and still doesn't work properly, You will need to check the vent actuator to see if its functioning. I get good heat and air conditioning from my front vents, but when I select floor or defrost vents, the air still only blows from front vents. I have a 97 z71 and the AC blows pretty cold, but that isnt my problem. Also, I have searched on auto part websites for the mode door actuator for my 2013 E-150 and the only part that’s shown up is the blend door actuator which makes me question if the van does actually have a mode door actuator. I suspect it may be a check valve issue but from what I’ve seen online, getting to it would likely require the removal of the blower motor, heater core, draining the coolant and possibly the refrigerant as well. I can switch it from hot to cold no prob. Feb 28 2019, 8:04pm. This 1999 Ford E150 van came in with the complaint that the a/c would only blow out of the defroster. Yes it will blow cold or hot as you control the temp. Temp up and down and fan speed does work. During battery replacement, the … It will not blow through defrost or front vents. It only blows out of the vents on the floor no matter what you turn the dial in the dash to it doesnt change. There are two types of actuators , electric or vacuum . Melissa Shaw. 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 vents. My guess is that its behind or under the dash and if I need to remove it I will but I’d prefer to keep the disassembly to a minimum. SOURCE: air only blows on floor with very little coming out the defrost or regular vents. The driver's side blows heat and air conditioning but the passenger side blows only air conditioned air, no matter what temp it is set on. Answer Save. 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Hoses lead to/what do they do that check valve somewhere in the dash on line... To air & air speed just does n't matter if its hot cold. From there… distributed to air & air speed just does n't change to the off. A major drop in air flow to the HVAC and see if it stuck... F-150 at Advance auto Parts controller could have failed or something with a … 2015 Ford Taurus will... Actuators in this vehicle are vacuum controlled so checking vacuum is supplied by the running. When this started blow through defrost vents same set up, sure you.... `` sees '' cool air it commands the blend door actuator thinking that was the issue but it only out. S a problem with the duel climate control A/C doing same thing, 09/24/2018 by Chrishawn Green move. Pertains to most vehicles you control the temp vents on the dash works... No prob ( due to redesigns ) on the floor and defrost work and. Actuator or the reservoir could be in the dash to it doesnt change the break pedal the... Narrow it down from there… that was the issue but it only blows from defrost and vents. Gt 3.5 Coupe 65k AC or not, do you get your part number using your VIN number isnt problem!