Ford F-150 - 1997-2003 :: Air Conditioning Comes Out Of Defroster Vents
Apr 25, 2007
My uncles 99 f150 is acting a little strange. When he steps on the gas, the air conditioning comes out of the defroster vents. What's going on?
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Apr 25, 2007
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Ford Super Duty (1999-2016) :: F250 - Vacuum Leak / Air Conditioning Coming From Vents Switches To Defroster
My 1999 F 250 5.4 liter. I know I have a vacuum leak because whenever I accelerate the air conditioning coming from the vents switches to the defroster. So my question is how do I go about finding the leak? My hubs in the front are manual so I know I don't have lines going up there. I do have some mechanical capabilities I've changed water pumps alternators brakes etc. But never anything with vacuum lines or a/c.
View 14 RepliesFord F-150 - 1997-2003 :: Air Conditioning Will Only Blow Through Defrost
I have a 2003 Model F150 4x4 that has always ran good for me, and has only had minor issues ever since I've had it. Not too bad considering it has 266,xxx miles on it and running 100 miles a day on the original motor & transmission.
Here's my problem - my air conditioning will only blow thru the defrost. I can hit vent on the control panel and it will blow thru the vents, but if i hit max ac it switches to defrost. It has gotten super hot around here and i really need this to work correctly. I'm not very knowledgeable about this stuff (have worked more on older vehicles) so i guess I'll need a fairly detailed reply if possible. I have looked under the hood looking for messed up vacuum lines but haven't seen any that looked bad.
Ford F-150 - 1997-2003 :: Heated Air Coming Only Through The Defroster
1997 F-150, 4X4, 151K miles, 4.6L. For years I've had an issue with heated air coming only thru the defroster, never the floor (a/c works normal). I've searched the forum and read many posts regarding the blend door. I pulled the switch and tested the vacuum hoses by taking a can of compressed air and blowing into the lines. All seem to be working with the exception of one, the black hose. I tried to follow it but short of removing the entire dash, I lost it. I read that there is a canister and small module in the engine compartment. Is there a way to test these to see if they're the problem? Where to look ? I only see one, on the firewall, passenger side, between the fender and the center of the compartment. Where's the other?
View 4 RepliesFord F-150 - 1997-2003 :: Compressor Cycling Even When AC Or Defroster Is Not Turned On
My 2003 F150's compressor cycles even when the a/c or defroster is not turned on. It has the climate control type of temperature system. This doesn't seem normal.
View 2 RepliesFord Excursion :: 2000 - A/C Blows Out Of Defroster Vents Intermittently?
Today im driving along in my 2000 X v-10 limited and had the AC blowing on high. All of a sudden it started to blow out the defroster vents, then back to the correct dash vents, then back and forth intermittently.....No vacuum leaks that I could find.. Is that controls what vent doors open to control air flow?
View 14 RepliesFord Super Duty (1999-2016) :: 2005 F250 - Air Conditioning Vents Not Working
So I got in my truck yesterday and i started it like normal and turned air on. The air will not blow out of the vents but only the defrost vents. I have checked all vacuum lines and good, my 4x4 engages and no issue with it locking in. I am Puzzled on what it could be?
View 3 RepliesFord Super Duty (1999-2016) :: 2011 F750 - Very Little Air Flow Through The Vents / Defroster
I can hear and see the blower motor running great. I just have very little air flow through the vents, defroster etc... is there a blower motor door between motor and vents. 2011 F750 xl superduty ....
View 2 RepliesPassat (B5) :: Air Conditioning - Vents Hiss When AC Is On
Air Conditioning issues, vents 'hiss' when the A/C is on ... So we just bought an 04 B5.5V TDI and when we were test driving the car, I didn't actually notice this issue since we didn't do extensive driving and I wasn't listening for this problem specifically.
So basically what I found after the purchase is that the a/c is not very strong at all... even full bore and the vents have a hiss, hissing, whine, moan coming from them.
The minimal troubleshooting I have done was just to try to determine, while at idle from inside the car... when the noise was happening. What I have come up with is this.
If the AC switch is off, I can turn the fan on to any speed and the noise will not present itself.
If the AC switch is on, going from fan stopped to speed 1, about 70% of the time the hissing will not present.
If the AC switch is on, going to any of the faster fan speeds (2+) and center vents begin to hiss at me.
Once the hissing is happening, turning the fan speed back 1 will not stop the hissing.
The hissing slows and stops when the fan is turned off or the AC switch is turned off.
The hissing does not sound like a fan rubbing. Its not quite a mechanical sound like a bad bearing or debris hitting the fan.
The hissing sounds a little bit like someone blowing through a straw. However, the fan seems to move up and down the speed range just as expected and the air output seems to match the speed... so its not like the air movement is low.
Gmc - Envoyxl :: No Heat Or Air Conditioning Coming Out Of Overhead Vents
I have a 2003 GMC Envoy XL. There isn't any heat or air conditioning coming out of the overhead vents. My mechanic tells me it is a control head module. I would like to try and fix this myself. I don't know where this module is located on the vehicle. It seems I could just remove the defective one and replace it with a new part. Are these modules easy to find in part stores and how expensive is this part?
View 2 RepliesAccord :: 1998 - When Select Defroster Air Blowing From The Vents
I have a 1998 Accord with a 4 cylinder. When I select defroster the air blows from the vents.
View 1 RepliesPontiac - Grandprix :: Moldy Smell That Comes Out Of Vents After Shut Off Air Conditioning
I enjoy your show and newspaper column. Here's my situation. I have a 2008 Grand Prix with a stinky problem. There's a terrible musty, moldy smell that comes out of my vents (any vents, i.e. dashboard, floor, defrost) after I shut off my air conditioning. When just the fresh air from outside is coming through the vents, everything is just fine. When I turn on my air conditioning, everything is just fine. When I turn off my air conditioning is when the funky smell starts.
Mechanic number one cleaned out the drain hole, sprayed anti-mold spray and foam through the air intake vents with the recirculation switch on and the windows rolled up. But the mold is still there. Mechanic number two shared with me that the only way to get the mold out is to disassemble part of the A/C unit, physically clean out and disinfect the unit and then add some other part that drain or dry the unit so moisture never sits in there and starts the molding process. Is that the best way to deal with this problem?
Accord :: Windshield And Side Window Defroster Vents Have Not Been Working
My windshield and side window defroster vents have not been working but every other air feature on the air system works fine. When I switch to the defroster, air just continues to come out of the front vents and not out of the defroster vent located on the top of the dash. I plan on going to dealership to have it checked out. I have looked through my hayne's book with no luck. One of my buddies said it could be a relay or something but I have not been able to find a relay specific to the defroster. Just wanted to get this sorted out because it takes longer than usual to defog/defrost my windows now without this feature working correctly.
I have a 2003 Honda Accord EX V-6 Coupe with dual climate control.
Camry :: 2011 XLE - Musty Smell From Vents When Turning On Defroster
I got my first Toyota couple months ago, Camry xle i4 38k. Everything is fine except for the not-so-smooth tranny, but I get used to it. The thing annoys me is the moldy smell from the vents. I usually turn on fan (A/C off, inner circulation on), when notice the smell, I changed the cabin air filter (the old one has tons of dirt!!). the smell goes away, but whenever I put on defroster, it comes back.
View 11 RepliesGolf/GTI VII :: Dull Rattle Sound Coming From The Defroster Vents
New GTI owner here! Just picked up my '16 carbon steel gray Autobahn with PP, DSG, DCC, Xenon. Really enjoying it. Coming from an 07 E92 335i, I'm still getting used to the very different feel of this vehicle, but it's mostly a pleasant experience. However, one issue: there's a sound coming from the defroster vents, a kind of dull "rattle sound" that isn't anything terrible but I wish it wasn't there. It isn't a leaf hitting a fan blade as it goes away if I turn off the defrost vents. It just sounds like air hitting a rough edge on something causing a turbulence noise. I guess it could be something fluttering in that area, but I can't see anything when looking at the vent from outside the car and it's very constant.
View 15 RepliesFord F-150 - 1997-2003 :: Propane Smell In Cab From Vents?
Bought this truck earlier this year, and started to notice from time to time a smell in the cab that can only be described as propane. Truck was sound and the windows were down most of the time so I let it go. Probably not smart. With the windows up more often now, what this could be. It comes and goes. My guess is it's somehow coming through the vents, but what the heck is it? Is there anything in a truck that has mercaptan in it?
View 10 RepliesFord F-150 - 1997-2003 :: AC Works But Air Out Of Vents Is Not Ice Cold On Max
The AC works, but just not well enough on a really hot day. On a day in the 90s I have to put it on Max AC and even then it does not cool down for a while and the air out of the vents is not ice cold.
So, it works, but I cannot tell if there is something wrong or not. I recently put in a can of AC Pro and it did not change anything.
Ford F-150 - 1997-2003 :: Antifreeze Smell Through Vents
I'm guessing my heater core is bad as I smell coolant thru the vents. I think the blend door is broke too. I'm guessing the heater core and blend door are in the same area?
View 2 RepliesJeep - Cherokee :: 1996 - AC System Only Blowing Cold Air Out Of Defroster Vents
My 1996 Jeep Cherokee A/C system pushes cold air but out of the defroster vents not the A/C vents. Why this is happening? I suspect it is the slide switches for the A/C system but I am not sure and do not want to take the dash apart before I have some confirmation. I have checked the vacuum hoses with the heater/A/C system and they seem fine.
View 2 RepliesSuzuki - Swift :: Defroster And Heater On - White Vapor Smoke Comes From Vents
I have a 1996 Suzuki Swift. My defroster stopped working several weeks ago.
If I have the defroster and heater on at the same time, white vapor smoke comes from my vents. My heater works fine when I choose the vent option for it to blow directly on me but I can see and smell light blue smoke if I change the vent option to blow on my feet.
In addition a thin white film covers my windows while I'm driving whether I have the heater on or not (and there's a slight oil smell in the car if the heater is on - I do have an oil leak). The thin white film can be wiped from the windows easily at first but becomes more difficult to wipe after 30 minutes or so of driving. Once I turn the car off, the film disappears within 6-8 hours.
Ford F-150 - 1997-2003 :: 1998 - Air Quit Coming Out Of Vents
I am having problems with the blower on my truck. I can feel the air coming from vents no matter what setting on it. I think it maybe the blower itself as it was working and just quit. Is there a fuse for the blower that I can check? And I have the V6 4.2L 2 wheel drive
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