2004 KIA Sorento, heater problems

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

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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 ...

www.doityourself.com/...repairs.../459521-heater-only-works-when-pres...

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/

You'll have to jack up the front of the car, or safer yet, park the car facing up a large hill, and run the car with the overflow cap off while shaking it back and forth. It will take 5-10 minutes but you will get a lot of air out, after this add coolant and drive around, you heater should work better. This may have to be done multiple times to completely purge the system of air.

I agree with your logic. Attached vid addresses bleeding. Sounds like at low rpms, not enough flow to transfer the heat. So bubble or maybe a partially obstructed core. There are a couple of vids on clearing a core... GOod luck, let us know if you figure it out.

Sounds like the cooling system is low on antifreeze. Have you checked to make sure it is at it's proper level?

Heater coil

Engines can rock on the motor mounts. You probably have a vacuum line that is pinched, cracked, broken,kinked, or unhooked. check the engine compartment lines first. If you have thin plastic vacuum lines, they can kink more easily than rubber lines. If you have been working under the dash (replacing a radio, etc) check your work area in case you have a broken fitting on a vacuum housing or an unhooked line.

check your heater controls , there may be a cable lose or broken, or a vacume hose lose or broken,i don't know if that car has a heat control valve,but if it does you might check that as well.
hope this helps!

yes, mine too. i called a friend at the dealer, he said "that's a kia." he said most of them do it, constant complaints about it. the heater cores aren't big enough in them. stupidest answer ever!!! i live in canada, we like to get into a warm car!

I would change thermostat and see if that fixes the problem

I had a similar problem with AC & Heater fan,it works on and off, and sometimes if the road was rough it runs, So I had to remove the fan clean it with a blower from dust and debris, then I installed it back and it is running ever since for more than a year without having to replace it.