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The heater is blowing cool air . Is not heating the car

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  • 7 Answers

Check coolant level first. would need to know year make and model for anymore info

Posted on Dec 31, 2012

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: NO HEAT

take heater hoses off and flush heater core these vehicles are known for this problem might have to do this every year

Posted on Nov 01, 2008

tommyboinow
  • 324 Answers

SOURCE: heater doesn't work

your heater core went bad, you need to replace the heater core....

Posted on Nov 26, 2008

dgjtex
  • 405 Answers

SOURCE: heater does not blow hot air, just cool air

You can put a higher temp thermostat and that should help, but it should at least have 170 degree air right now if it was working right. There are two other things you might check for, the diverter door make some sound when you switch from heat to cool and back, I can't tell you for sure if it is a manual, vacumn or electric but that would definitely cause it to blow cold air. There is also a valve which cuts off circulation to the heater core when your not using it. This valve will be in line with the heater hoses going to your heater core. I have seen some that were actually part of the heater core box. I feel pretty sure one of these will be your problem. Also if your car is low on coolant it would not heat properly. Hope this can help you!

Posted on Dec 15, 2008

  • 1 Answer

SOURCE: Heater blows cool air & never heats up.

I changed the thermostat. It works like a charm now!!

Posted on Dec 17, 2008

  • 161 Answers

SOURCE: Heater blows cool air instead of warm air

check your coolant level if it is low top it off. if it is full you may need to change your thermostat to get the temp back to normal. for the heat check the heater control valve to make sure it isn't stuck (heater control valve should be located against fire wall connected to heater hose.

Posted on Dec 07, 2009

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Blows cold air turn heat on


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    07 Tucson heater blowing cold air - Hyundai Forum - Hyundai ...

    www.hyundaiforum.com > ... > Vehicle Line Up > Hyundai Tucson
    Dec 16, 2009 - I have a 2007 Tucson, when you turn on the heater it only blows hot air... Join Date: May 2005 ... a low coolant level will exhibit the first stated symptoms of no heat/low heat at idle and increased heat at cruise due to an air ...

    Denlors Auto Blog » Blog Archive » Car Heater Blows Cold ...

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    Oct 10, 2009 - When a car heater blows cold air, there are several possibilities that should ...... On my Dodge Neon when I turn on the heat it blows out cold air.

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    ... Cadillac, Chevrolet, Chrysler, Dodge, FIAT, Ford, Geo, GMC, Honda, Hummer,Hyundai, Infiniti, Isuzu, Jaguar ... I'll turn up the temp on the dual control to get heat,

Jan 28, 2016 | 2005 Hyundai Tucson

2 Answers

Heater temp on high only bows luke warm air after driving. A/C works just fine.Plenty of cold air from it


heater blows cold air idle chrysler 300 Questions & Answers ...

www.fixya.com > Forum > Tags
Find solutions to your heater blows cold air idle chrysler 300 question. ... blow warmair for a few mins then back to luke warm. i replaced thermostat ... HEAT BLOWSCOLD AIR WHEN IDLING ONLY GETS HOT WHEN START DRIVING ... About 15 minutes after driving the diver side vents start blowing straight cold air but the ...

Heater only works when pressing the gas? - DoItYourself.com ...

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Nov 3, 2011 - When I press the gas, the air from the vents is nice and hot. .... So am Idriving a car with a ton of problems, or could the power steering ... Just anotherquestion, when warmed up does the engine temperature ... When the heater is on and I'm not pressing the gas pedal, luke warm air blows from the vents.

Heater blows cool air when stopped and warm air while ...

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RedditFeb 12, 2014 - Heater blows cool air when stopped and warm air while driving 2008 Kia Spectra (self. ... just fine but appears to blow cool air when I was stopped at a stoplight. ... My temp gauge would also be pegged high when at idle / low RPM. ...thermostat only blocks coolant going to the radiator, and the heater core, ...Missing: 300m ‎luke

Why is My Car AC Blowing Hot Air? - BlueDevil Products

gobdp.com/blog/car-ac-blowing-hot-air/

Jan 27, 2016 | 2000 Chrysler 300M

1 Answer

I have a 2007 Saturn, Aura. Heater does not blow hot, slow coolant leak, & it also over heats. Please help! I'm freezing when I'm in my car!!!


You need to fix the coolant leak, then refill and bleed cooling system, then you will get heat and cure overheating problem too

Dec 16, 2015 | Cars & Trucks

1 Answer

The heater kicks on but only blows cold air


Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Jan 03, 2013 | Cars & Trucks

2 Answers

Why would my heater blow out cool air when sitting still and then hot air when going down the road and then it's not all that hot


Try flushing or blowing high pressure air through the heater core lines. its sludge build up and need to be flushed through heater core only. check antifreeze fluid level. only put in straight antifreeze, do not mix. most people do not know what mixture should be, so be safe and add straight, it will not hurt it, i run 100% straight antifreeze and never had a problem or worry about it ever freezing and cracking my block, heads or radiator cracking.

Jan 29, 2012 | 2001 Daewoo Nubira

1 Answer

1996 Honda Passport EX 3.0 Heater runs weak, the fan barely puts any air out, but I can hear it blowing. It also barely puts out warm air. With the temp. lever in cool it really blows. but as I slide it...


Is this a quantity of air problem or quality of the heat from the heater?
If its heat from the heater you need to first flysh and reverse flush your cooling system, includes radiator etc and use a good flushing agent first. Then replace heater water valve.
Refill and bleed out cooling system and get car up to temp.
When hot, feel pipes going into and out of heater matrix. On full heat they should both be roughly same temp, if not , replace matrix cos it must have collapsed.
Have yoy EML light checked at local garage using spec diagnostic tools.
Roger

Apr 24, 2017 | 1996 Honda Passport

1 Answer

Heater started blowing cool air? 07 titan 4x4 LE.


auto ac? check for a coolant leak low collant level will cause air pockets in cooling/heater system.

Mar 21, 2010 | 2007 Nissan Titan LE

1 Answer

Heater blow cool air at idle


try flushing the cooling system. sounds like the heater core may be all gumed up inside. could also be the water pump starting to fail.

Feb 05, 2010 | 2002 Nissan Maxima

1 Answer

Heater blows cool air instead of warm air


check your coolant level if it is low top it off. if it is full you may need to change your thermostat to get the temp back to normal. for the heat check the heater control valve to make sure it isn't stuck (heater control valve should be located against fire wall connected to heater hose.

Dec 07, 2009 | Dodge Grand Caravan Cars & Trucks

1 Answer

Heater does not blow hot air, just cool air


You can put a higher temp thermostat and that should help, but it should at least have 170 degree air right now if it was working right. There are two other things you might check for, the diverter door make some sound when you switch from heat to cool and back, I can't tell you for sure if it is a manual, vacumn or electric but that would definitely cause it to blow cold air. There is also a valve which cuts off circulation to the heater core when your not using it. This valve will be in line with the heater hoses going to your heater core. I have seen some that were actually part of the heater core box. I feel pretty sure one of these will be your problem. Also if your car is low on coolant it would not heat properly. Hope this can help you!

Dec 15, 2008 | 2004 Volkswagen Jetta

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