Elantra HD (2006-10) :: 2008 - Heater Not Working / Vents Blow Cold Air But Not Hot


Nov 7, 2015

Push A/C button is always on green. The (air speed) 01234 button is also always on green. the Push button turns on and off orange whenever I click it.

Anyways, the AC doesn't blow any hot air... always just cold. I've adjusted the dial to red and have left it there for a long time... no hot air. Any trouble shooting I can do?

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Elantra HD (2006-10) :: Heater Started To Blow Out Ice Cold Air / Check Engine And Battery Lights Came On

I was driving home on the highway, and my 2006 Elantra did the following things in this exact order:

-Heater started to blow out ice cold air
-Temperature gauge rose, dropped down, and then rose right back up to the red area and stayed
-As I was slowing down to pull over, my tachometer dropped to 0rpm
-My "Check Engine" and "Battery" lights came on
-The car completely died and came to a rolling stop on the shoulder

I am trying to find answers as to what has happened to my car.

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Santa Fe (CM - 2007-12) :: Rear Heater Vents Blow Cold Only

Cannot figure out how to get the heated air to flow through the back via the rear vents. All I get is outside air. I cannot find anything about it in the manual. The dealer has no clue but is trying to find something on it. New 2009 Santa Fe Limited.

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Ford - Explorer :: 2006 - Heater Controls / Air Does Not Blow Through Some Of The Vents

To kick off the coldest week (so far) of the winter season, I noticed a problem with the heater controls in my 06 Explorer with manual temp. controls. No matter which fan settings I select (defrost, panel+floor, etc), air does not blow through some of the vents. I can hear the fan working and air flows through the defrost vents and through the floor vents, but the there is no airflow through the vents below radio and round vents on the far left and far right sides of the dashboard.

Perhaps related to this problem, a couple months ago I replaced the blower motor resistor because fan speeds 1 and 2 did not work, only 3 and 4 worked, so whenever I would turn on the heat or A/C, it was on full blast all the time. After replacing the resistor, the issue was resolved and all of the speeds worked well. I guess I just never realized the issue with the vents, or maybe the problem happened because I replaced the resistor?

Since I'm not too knowledgeable with the climate control circuit, I'm not too sure where to begin, perhaps the switch or blower motor?

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Yukon :: 2000 - Climate Control Stopped Working / Heat Or Cold Not Blow Out Of Vents

I have a 2000 yukon and the climate control stopped working. The defrost works just fine but the heater/ac stopped working nothing blows out from my vents when ac/heater setting is on. I checked all fuses and wires and everything is ok and connected. I just replaced my cd player and the next day climate control stopped working. I went back and checked the wireing of the cd player as well, everything is fine. Would i need a new climate control, or senser or is there a fuse on the heater itself.

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Ford Super Duty (1999-2016) :: 2006 F250 - Heater Will Blow Cold Air Unless Driving At Highway Speed

I have a 2006 f250 and the heater will blow cold air unless you are driving in like highway conditions. If you stop or drive slow it blows cold air only. What is causing this???

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Passat (B6) :: 2006 - AC Stopped Working / Won't Blow Cold Air

I've got a '06 passat. The a/c was working fine one day, and then the very next day it just stopped. the a/c light comes on when I push the button for it, but it won't blow cold air. I'm not sure if this is a common problem on passats or what's going on.

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Ford - Taurus :: 1994 - AC Doesn't Blow Cold And Heater Doesn't Blow Hot

I have a 94 ford Taurus all of a sudden my ac doesn't blow cold and my heat doesn't blow hot. Also every now and again I hear a sound like an alarm clock coming from passenger side??

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Ford Super Duty (1999-2016) :: 1997 F250 - Cold Engine - Heater Would Blow Either Cold Or Slightly Warm

I can't seem to get the engine temp to middle range on the marker, but yet my heater blows "to me" hot air. Even while sitting in idle for extended amounts of time I cannot get it to "operating" temperature. I would think if my thermostat was stuck open my heater would blow either cold or slightly warm air. I have the 5.4L engine with knn air filter and no cats.

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Elantra HD (2006-10) :: 2009 SE - Heater Cold On Idle And Engine Overheating

A few weeks ago I noticed a fluctuation in my car's heater. The heater blows really hot when driving, and blows cold when the car is idling or coasting. I read up on the forums to check the coolant levels, which were full since my last fluid change a few months ago. The next step seemed to be to change the thermostat. I changed the thermostat and the heater acts the same, and since then the car has begun intermittently overheating. The temperature warning will flash on for maybe about a minute, then go back off. I have been running the heater on full blast trying to keep the car from overheating.

This brings me to a couple of questions:

There's an arrow on the thermostat. Does this need to point toward the radiator, or straight up?

In moving the air cleaner housing to get to the thermostat, I lost two of the little clips that hold it shut. Is this critical?

If the thermostat is good, and the coolant levels are good, there's no air in the system and I don't have any leaks, what could this be?

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Subaru - Forester :: A/C Doesn't Blow Cold Air Out Of Vents

So, I purchased a 2004 Subaru forester at the in of 2013, from a private seller. When I turn on the a/c the air is warm, I thought maybe the refrigerant so low, so I check the level and it is good, the a/c compressor clutch engages, but warm air still comes out of the vents. I am asking what else could cause the a/c to blow warm air?

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Azera TG (2006-11) :: 2008 - No Cold Air On Driver Side Vents

2008 Azera Ltd. with 100,000 miles. Good cold air on passenger side but not drivers side. Where is drivers side acuator located so I can try to test and replace?

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Elantra XD (2001-06) :: Heater Won't Blow Heat

2005 Elantra here with 120k miles

Problem: Not heat will come out unless

1) I don't turn on the Fan Motor at all. Very Nice heat will "bleed" out of the vents as long as there is no Fan on - on any setting.

2) Lukewarm heat will come out if I am giving the car gas or revving it. As soon as it goes back to idle or I am no longer giving gas it goes back to no heat at all.

Things I have tried:

Topped up the radiator and tank (radiator has been replaced)

Water pump replaced

No leaks

Thermostat is opening ( Upper hose gets hot, Lower hose stays cold for a while and then gets hot)

Flushed heater core with a garden hose.

Inlet hose to heater core is hotter than outlet hose but outlet hose is not cold to the touch.

Radiator cap has been replaced

Car does not run hot at all

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Elantra XD (2001-06) :: Heater Does Not Blow Warm Air

I just replaced the radiator in my 2001 Elantra and now the heater will not blow warm air. Also the temp gauge on the dash stays at cold.

I have replaced all radiator hoses ...

New thermostat
New thermostat sensor

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Lexus ES 2007-12 :: Air Conditioner Front Two Vents Does Not Blow Out Cold Air At All

I have an issue with my a/c. The left side blows out air but it is not cold. The right side is cold. The whole front dash has 4 vents total so the left two does not blow out cold air at all.

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Santa Fe (CM - 2007-12) :: Front Vents Blow Hot And Rear Blowing Cold

So a recent problem on my 2012 sf.. the front vents blow hot and the rear blows cold.?

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Lexus RX 2004-09 :: Heater Will Start To Blow Cold Air

I have owned my 2008 Rx 400 h for just over two months now and at the risk of sounding dense, am I right in assuming that when you are coasting along without the engine running, the heater will start to blow cold air? Everything works fine until you lift your foot off the pedal. This is my first Lexus/Toyota and hybrid so I'm not totally au fait with how it should be working.

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Jeep - Grandcherokee :: AC Malfunction - Passenger Side Vents Blow Warm Air Rather Than Cold Air

When I turn on the air conditioning, the driver's side works well, but the passenger's side vents blow warm air. What could this mean and could I fix it from home?

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Jeep - Grandcherokee :: 1999 - Heater Broken / Fan Only Blow Cold Air

My 99 grand cherokee's heater is broken - fan blows but only cold air. I've had two mechanics tell me its probably the blend doors and will be quite expensive to repair because it requires removal of dashboard. Looking for after market repair kit which allows for a DIY fix going through the glove box? Is this a good bet to try?

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Ford F-150 - 1997-2003 :: 2001 - Heater Will Only Blow Through Cold Air

So the heater on my 2001 f150 will only blow through cold air. I thought that I may have a heater core clog so I back flushed it with water until it was coming through clean and unrestricted but that didn't solve the problem.

Now, some things to note are a potential coolant leak. I can't seem to find one but I filled up the antifreeze about two months ago and when I checked it the other day it was more or less empty. I've filled it up again and I will monitor it for the next couple of days.

Another thing to mention is that no matter what setting I have the heater on (ie 'panel' or 'defrost') I get cold air blowing at the passenger side's feet. Is this indicative of a hose leak or something?

Also worth noting is that the intake hose to the heater core gets hot after driving but the outtake stays cool. This is why I originally thought I had a core clog.
Should I be checking my blend door? If so how to I access it?

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Sonata NF (2006-10) :: AC Won't Blow Through Top Vents

So today is the first hot day of the year here in Central PA. I jump in my car at lunch - turn on the A/C & it won't blow out of the top vents. Blowing like crazy on my feet - and freezing them - but won't blow through the dash vents! Worked fine last year - awesome in fact!! Actually cool air is trickling through the top vents - but not blowing like I know it should.

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