No front heat/ Have rear heat - Kia Forum
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#1 (permalink) Old 07-08-2010, 06:13 PM
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Question No front heat/ Have rear heat

Well the title say's it all, My van has no front heat but it has rear heat. Going to state some specs of my Sedona now, cause I know your gonna ask.

2002 Kia Sedona EX 3.5L V6 Gas engine, AC...

I guess from what I have read those are the important differences between the few engine models. I am also located in the US, so it is a Sedona.

Alright glad to be here hope I can do more than just lurk the forum like I have been doing for my coil pack problem, But I wanna get this fixed before winter comes.

I need some things to check as to why my front heat does not work when my rear hear does.

The fan works and blows
The AC works and is cold

If there are any other questions let me know, Thanks
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#2 (permalink) Old 07-13-2010, 11:44 AM
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I'm no expert but I thought I'd try and get the ball rolling for you here...

Maybe faulty heater contols? ie not changing fans over to heated air supply. Fuse possibly (although if AC is working this maybe unlikely)

Maybe faulty heater matrix? blocked pipe?

Any suggestions people?
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#3 (permalink) Old 07-13-2010, 11:28 PM
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Originally Posted by coyote81 View Post
Well the title say's it all, My van has no front heat but it has rear heat. Going to state some specs of my Sedona now, cause I know your gonna ask.

2002 Kia Sedona EX 3.5L V6 Gas engine, AC...

I guess from what I have read those are the important differences between the few engine models. I am also located in the US, so it is a Sedona.

Alright glad to be here hope I can do more than just lurk the forum like I have been doing for my coil pack problem, But I wanna get this fixed before winter comes.

I need some things to check as to why my front heat does not work when my rear hear does.

The fan works and blows
The AC works and is cold

If there are any other questions let me know, Thanks
Are you the original owner? Possibly the front heater core was bypassed by previous owner. If not, you will need to verify that the temp control (mix) actuator is moving when you change it. Possibly the actuator has gone out.

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Mike AKA Paco
For US Kia service info Kiatechinfo, for Kia parts catalog Mobis
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#4 (permalink) Old 08-09-2010, 04:25 PM
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Try an auto electrician,do you have mobile Auto Electricians over your neck of the woods.
Sounds like an electrical contacts issue

If you remain as cool as a cucumber when all around is mayhem and upheavel (THEN YOU MAY HAVE MISINTERPRETED THE SITUATION)
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#5 (permalink) Old 08-11-2010, 03:55 PM
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[QUOTE=coyote81;299727]Well the title say's it all, My van has no front heat but it has rear heat.
The fan works and blows
The AC works and is cold

Apparently this is a problem that happens more than once. I have the exact same issue on a 2003 Sedona 3.5L. I live in South Florida so it is no big deal, but last winter was a bit chilly for us. Once I understand better how to work with the kiatechinfo.com site I may try to figure out what might be the problem. Of course, if any of you skilled KIA mechanics do have the solution, Please help us out.
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#6 (permalink) Old 11-19-2010, 05:13 PM
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Default same problem in Texas

Anyone with a little experience here ?

All coolant levels good, no air pockets, etc. Also experiencing nice snap , crackle, pop from electrical circuits. Able to hear under the hood better than inside the car. It all started with blinkers acting on their own. Started checking all grounds and re-greasing the dash bulbs.

Thanks.
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#7 (permalink) Old 01-12-2012, 06:52 PM
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It is usually one of two things when this happens. There is a blend door that has a solenoid actuator for the operation, it could be that it has an air leak on the hose or has gone bad or has something obstructing the operation like a bag that got sucked up or something like that. You usually have to pull the air box under the dash, which sometimes requires removing the whole dash. The other is a clogged heater core, which you can test by removing both hoses where they go into the firewall, installing a long enough section on one of them so you can blow through to see if there is an obstruction. Usually if there is you will have to replace the heater core pretty quickly, because it is usually clogged with rust or corrosion and means that the heater core probably is degraded, and this also requires removal of air box, ergo the dash has to come out in this case too.
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