heater core

Hello,

First you must drain the coolant and disconnect the battery. Here is a guide that will give you an idea on how to do the job witht eh diagrams for youi car below.

https://www.2carpros.com/articles/replace-heater-core

You will need to vacuum down and recharge the air conditioner

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Check out the diagrams (Below)

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

Heater problem
2003 Kia Sedona 6 cyl Front Wheel Drive Automatic

I need to change the metal line that runs from the heater core to the rear heat. I need to know how to uninstall and reinstall. Thank you

YOU CAN DO THIS TWO WAYS #1-FIND THE LEAK UNDER THE CAR AND JUST REPLACE WITH A RUBBER HOSE WHERE IT IS LEAKING ,BUT LIKE ME MINE WAS SO RUST I JUST PLUG IT AT THE BEGINNING OF THE LINES ONE LINE AT THE THERMSTIC AND THE OTHER AT THE RADATER

Heater problem
2004 Kia Sedona 6 cyl Front Wheel Drive Automatic

overheating changed thermostat and still overheating
called dealer they said the rear heater core. but don't know it is

Hi there,

This will have to be checked out by a mechanic, you will need to make sure that the cooling fans are working, there are no external leaks, the pressure cap is working and the radiator has no blockages, if that is all OK, a Co check of the cooling system will detect any exhaust gasses in the system, a sure sign of a hard or gasket problem.

Mark (mhpautos)