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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 ...
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.
... 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,
Try to back wash the heater core first if it doesnt work then its clogged up try to turn the heater on the front with the heater off for the back keep an eye on the temp guage if it goes up than normal then its clogged....
Fyi u have to run the engine for awhile with the heater fan on
if you saying the fan wont blow it may need a fan motor not uncommon it might be a speed switch if it has one some time you can hook a wire on the back of the speed switch plug in to get it on high use a 14 gauge wire or bigger a small jumper bent in a loop with the rubber peeled off the ends and shove them in the switch plug find the 12 volt ht wire on the plug with light or vom then try the other wires one at a time til fan runs with ignition switch on
I like that you were knowledgeable to check both coolant lines tells me you are getting hot coolant through the heater core next thing to check will be the blend door on the inside of your vehicle. The blend door is a door that switches from cold air duct to heater duct depending on what you are using at the time. If it is stuck on the cold air duct you will not get any heat sometimes these doors are vacuum actuated and sometimes they are electrically actuated most the time you are able to see the movement of the motor from inside if you don't see any movement but you hear it move chances are it is the door blend I hope this helps.
Hi i'm ryan, is it blowing cold air, or just won't come on at all? If its blowing cold air try checking the antifreeze level, low levels will cause it to blow cold air. If it is just not comming on at all, try checking the fuse for the heater.
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