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Vent control issue - only dash/floor or defrost/floor

Discussion in 'Stock 2002 - 2005 Explorers' started by jchristian79, November 20, 2011.

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    1. jchristian79

      jchristian79 New Member

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      I've searched the forum quite a bit but haven't found anything that quite matches what's going on. I apologize if I've missed something!

      2005 XLT 4x4 V8 with manual climate controls. I just picked this up 3 weeks ago. The blend door actuator was broken and I replaced that via BigRondo's thread. Now I have heat, which is great!

      The next problem I ran in to is with the air flow through the vents, but it's not quite like anything else I've read on here. I haven't had occasion to really use the air until it got cold this last week. That's when I noticed this. Here's what's happening.

      When the air flow selector is set to dash and floor, dash only or max a/c, the air flow always comes out of both the floor AND dash vents but not the defrost vents. It doesn't matter which of the three it's set on, the air always comes out the floor and dash vents.

      When the air flow is set to floor only, floor and defrost or defrost only, the air always comes out of the floor AND the defrost but not the dash vents. Once again, it doesn't matter which of the three it's set on, it comes out defrost and floor vents.

      So basically, it's not allowing me to select just the dash, just the floor or just the defrost.

      The blower has strong airflow through all the vents and the fan speed selector works just fine and I can control the force of the air, so I don't believe it's the recirc door that I've read about on here. Every other post states that the airflow is stuck on just one of the settings and won't change. I am able to change them, but I can't select just one.

      Could this be a vacuum issue? Control switch issue? Where should I start looking? Any help would be greatly appreciated!
       
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    3. BigRondo

      BigRondo USMC 1371 Staff Member Moderator Elite Explorer

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      I have a similar issue. My problem is that I have weak air flow to my defrost and I always have air flow coming out of the floor vents regardless of what position the selector is in.

      I haven't jumped into this yet, but I will be sure to post anything I find or fix here.
       
    4. Exproblems

      Exproblems Well-Known Member

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      >>>>>>>>>>>>>>

      I've got a similar thing going on in my Ex and I've already removed my bad air recirculation door, it's gone! When I have the heat set to windshield defroster only, I still get some heat and air flow coming thru my foot or floor vents, besides the defroster vents. I have no clue why that is, but I can live with it. The heat by my feet doesn't bother me.
      What I have noticed recently, is that I can hear my air conditioning compressor "clicking or cycling" on and off as I drive, especially when parked next to a bldg or wall you can hear it, even though I have the AC turned off and everyting is set to defrost and the hot temp side. I don't get any cold air coming thru the vents from the AC, just that the compressor is cycling for some odd reason. I don't know if one or the other is connected to each other some how. Is yours doing this as well?
       
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    5. jchristian79

      jchristian79 New Member

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      Weird...I'm not experiencing any issues with the AC compressor at all. I don't have any clicking and it's cold as ice when I turn it on. But the issue of airflow always coming through the floor sounds like what's going on with mine.

      BigRondo, same to yours except I'm not sure that my airflow is weak. I guess it may be since I've only had the truck for 3 weeks and don't have anything to compare it to. I'm planning on checking my recirc door this week to rule that out.

      The issue almost seems to be with the floor vent selector. The floor vents stay on all the time no matter which setting. Although, I guess that wouldn't explain why the defroster stays on when it's set to floor only, but it does turn off when set to dash vents :confused:
       
    6. Exproblems

      Exproblems Well-Known Member

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    7. jchristian79

      jchristian79 New Member

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      There's air flow no doubt, and the airflow increases as you increase the blower. I was just saying, while the airflow to me seems fine, maybe it's weaker than it should be and I just don't know it since I've only had the truck for a few weeks. I'm off on Wed. so I'll check the recirc door then, I'm not sure if I want to see it broken or not...
       
    8. jchristian79

      jchristian79 New Member

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      Ok, quick update. I ruled out the recirc door. I opened up the blower motor from beneath the dash and could see the recirc door in the up position clearly in place and not fallen.
       
    9. WTW3

      WTW3 New Member

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      Hello Guys,

      Did you or anyone resolve this issue?
      I have the same issue on my 2004 Explorer:
      Always some airflow to the footwell area, although it is insufficient. In the winter, I have cold feet due to low airflow even in the floor vent setting. In the summer, cold A/C air dumps onto my feet giving me cold feet, but not enough to the dash vents.

      I have replaced the recirculation door and that is still functioning properly.

      Thank you for any guidance you could suggest from your experiences!

      Tommy
       
    10. rambrose1

      rambrose1 New Member

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      Dont know if you have gotten this problem solved, but i seem to have the same issue. i did however find the problem i just do not know how to go about fixing it. It appears that the airflow door motor that is behind the radio and to the left is broken which does not allow the airflow to change to the defrost, so it always blows out the floor, or both the floor and the defrost. this motor is similar to the 2 that you can find when you drop the glove box down and look to the left. I have no idea how to get to the motor back behind the radio. Has anyone figured out away and is there a write up for it?
       
    11. Exproblems

      Exproblems Well-Known Member

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      Some of the components to the vent/temp controls can only be reached or repaired by pulling the dashboard off. There are write ups in the forum archives for removing the dash. Just use the search box at the top of the forum to find them, by typing in a question related to a specific repair or problem. Include the year, model and engine specs of your Explorer into your question.
       
    12. Noobie

      Noobie New Member

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      When my 2004 Explorer AC system was throwing hot air I told the dealer the compressor clucth was engaging and disengaging about every 5 or so seconds. I figured I had a leak in the sytem, but didn't notice it click on and off unless I had the windows down when it was nice enough not to be running the A/C. Not sure if that is your issue with the compressor clucth engaging/disengaging. The dealer told me that is common when the freon is low...and they wanted to first replace the mixing door to fix the problem! I told them to give it shot of freon w/ dye and they found the leak (dye) in the evaporator! Saved $600 from them replacing perfectly operating mixing door. Aftyer the shot of freaon, but before fixing the evaporator the clutch stopped constantly engaging and disengaging.

      Also, when I first bought the car new the first thing that went was the compressor clutch, agian didn't notice it until I had the windows down one day. that was fixed under warranty.
       
    13. bamnq6

      bamnq6 Active Member

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      I recently fixed a problem similar to this. If memory serves one of your actuators isn't functioning in the dash.

      Empty then lower your glove box. Crouched beside the truck looking up thru the open glove box toward the center of the truck you'll see several small silver vacuum actuators. I think the linkage on one of yours is broken...

      I recently put a new 'lever arm' on mine with lots of plastic welder epoxy.

      This is NOT a fun place to work, I hope you have small hands.

      I'll try to post a picture.
       
    14. Exproblems

      Exproblems Well-Known Member

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      Hey, where have you been? LOL These posts are nearly 3 years old! On my AC compressor running when set to defroster, that turned out to be exactly like it should or was designed. They say the AC running as well as defroster heat helps clear fog from the windshields. What I did notice is, when set to "Floor" vents and heat, the AC compressor "does not" turn on (just like I want it), but I also get air flowing thru the defroster vents so that works for me in winter. Kill 2 birds with 1 stone! :thumbsup:
       
    15. Exproblems

      Exproblems Well-Known Member

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      Well that leaves me out! I have hands like "The Crusher"! My shoulder width is as wide as a large refrigerator from side to side, so that doesn't help in tight places either. :D I did manage to remove the broken air recirculation door thru the glove box though.
       
    16. bamnq6

      bamnq6 Active Member

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      [​IMG]

      You're looking at the linkage on the actuator in the center of the photo.

      Here's you'll see the new actuator arm that I 3d printed and glued on... (has kinda a cross-hatch pattern facing the camera)
       
    17. wd911

      wd911 New Member

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      I have the same issue as jchristian79. Can't just have one direction of air flow, must be dash & floor combo. I've looked at the motor behind the glove box in the upper left. Everything is still attached but it only moves when you switch it to dash & floor option. Any solutions without removing the dash. I am not capable or willing to do that after 12 years and 210,000 miles. Thx Wanda
       
    18. lkreykes

      lkreykes New Member

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      Bump. I have the same problem. Recirculation door is functioning. Just only have 2 settings, dash and floor, or defrost and floor. How do I fix it??
       
    19. wkules

      wkules New Member

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      Big Rondo, did you ever figure this one out? I have the exact same problem you mentioned here. :(
       
    20. BigRondo

      BigRondo USMC 1371 Staff Member Moderator Elite Explorer

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      I did. I removed the center console and part of the duct going to the rear of the console and blocked it off and the airflow to the defrost increased quite a bit.

      I took a bunch of pictures of the procedure so I could do a write up but never got around to it. Maybe it's time I did!!
       
    21. radcar44

      radcar44 New Member

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      I have good temp control & no clicking noise. Rotating the heat/AC control makes no change in where the air comes out - which is everywhere, weakly. The silver vacuum can has been located, but it doesn't look like like those the photos. Mine points upward and appears to be attached to something else. I cant see the mechanical end, but I can get to the vacuum line. I pulled off the vacuum line and could detect a small suction.

      Any ideas, especially about the different orientation of the vacuum can?

      New info - plenty of air coming out the pipe for the rear vents. Tried covering this with Al tape-no help. Checked area vacuum lines but none appear loose.

      Still have weak air at all outlets.
       
      Last edited: April 7, 2015
    22. fr0st m0nkey

      fr0st m0nkey Active Member

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      Same problem but a lot less miles on my explorer. The actuator behind the glove box looks to move for most of the settings but air comes out of the dash and floor when you have it on feet only or any other settings (defrost, etc). I took the dash apart and unplugged all of the HVAC connections then plugged them back in to see if there was a loose wire or something but it didn't affect anything.
       
    23. CHAD HEDRICK

      CHAD HEDRICK New Member

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      my issue was very poor airflow to defrost vents, but lots to floor even though heater set to full defrost setting

      ok after working on this problem for a while I've figured it out. I work at a ford dealership in Chilliwack BC in the parts dept. one of the techs diagnosed it for me. there are 2 vacuum actuators on either side of the heater plenum behind the radio/ heater control panel. the drivers side actuator rod was broken off the plenum ford basic part # of 18471. very hard to see even with radio out, we used a high tech camera to see the broken plastic rod in there. when we cycled back and forth between defrost and dash setting we could see the rod moving awkwardly and that led us too the issue. so I have to pull the dash and replace this air vent duct asy. 5L2Z 18471 AA is the part # for my 02 explorer, manual a/c. retail price in Canada is about 425 $$$ close to a full day job for a experienced ford tech basically with this rod broken that door that its attached to in the heater unit that directs all the air up to the dash vents for defrost isn't moving to do its job, with the broken rod the air isn't going up to the dash or at least not the full shot of air flow.
       
      Last edited: June 11, 2016
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    24. CHAD HEDRICK

      CHAD HEDRICK New Member

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    25. CHAD HEDRICK

      CHAD HEDRICK New Member

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      ok so my problem is exactly the same as yours. gotta pull the dash and replace the heater plenum as per my previous post
       
    26. BRFamou5

      BRFamou5 New Member

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      So, there's no easy fix for this? No way to makeshift/engineer it?

      I "fixed" my blend door (stopped the clicking) by adjusting the thermostat and jamming a plastic fork on the lever to keep the blend door open (or closed... whichever way it was to make the heat stay on).

      Today I was lucky enough to find that the wire that connects to my AC clutch was disconnected... saving me quite a bit of time trouble shooting as well aso avoiding putting it in the shop. I was able to get a charge, but I'm noticing the clutch is not staying engaged - it goes on and off pretty frequently... though I've known for awhile that I don't have proper airflow - I'm really wanting to get it fixed now that the full heat of summer is upon us!
       

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