How to replace the heater core on 02 optima
Are there any instructions on how to replace the heater core on a 2002 kia optima?
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Ted Harris, try this:
Before servicing the vehicle, refer to the Precautions Section.
Disconnect the negative battery cable.
After disconnecting the negative battery cable, wait for at least 10 minutes for the SRS module to deplete its stored energy.
Recover the refrigerant.
Drain the cooling system.
Remove the expansion valve from the evaporator core and plug the lines.
Disconnect the heater hoses from the heater unit.
Remove the crash pad as follows:
Remove the cowl cross bar assembly.
Remove the heater unit.
Disconnect the heater from the blower unit.
Remove the heater core cover and remove the heater core.
Click image to see an enlarged view
Fig. Crash pad exploded view-Optima
Fig. Heater core from the heater unit-Optima
Installation is the reverse of removal.
Refill the cooling system to the correct level.
Start the engine and check for leaks.
information is from here. Hope this helps, good luck.
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