Question about Kia Sedona

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I have a 2003 Kia Sedona and noticed that the coolant is boiling in the reservior. I have changed the thermostat and the temperator sensor. The engine light was on and now it has turned off. Sometimes I smell something "sweet" in the van. As well, there is little or no heat when I turn on the heat. What is my next step? Thanks

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The sweet smell sounds like the converter stoppng up. But don't think this could cause it to boil in the resavore. Also might take to a shop just to check the hose may be colapaing. good luck sorry not more info.

Posted on Mar 23, 2011

  • pjvdev156 Mar 24, 2011

    Do you mean the cat. converter?
    I hasve check the hoses, they are ok?
    Does this sound like a coil pak issue

  • Steve Christmas
    Steve Christmas Mar 24, 2011

    Yes on the cat, converter, No i do't think the coil pac has nothing to do with overheating.
    I think all you need is a presure radiator cap.

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How to change thermostat on a 2005 kia sedona


  1. Drain the coolant
  2. The thermostat is located at the end of the top radiator hose. Remove the drain plug from the radiator and flush the coolant into a pan.
  3. Remove the Upper radiator hose
  4. Loosen the clamps that connect the upper radiator hose to the housing and remove the hose.
  5. Remove the thermostat housing
  6. Loosen the thermostat housing mounting bolts. Remove the housing and pull the thermostat from it.
  7. Replace the thermostat
  8. Inspect the new thermostat and install it with a new gasket. Mount the housing and upper radiator hose. Then pour new coolant into the radiator.

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Sarah, The Engine Coolant Temperature Sensor on your Kia is located below rad hose driver side by exhaust manifold. May be a good time to flush coolant system when changing sensor.
Check the attached links,instruction and guides, Good luck
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2003 Lincoln LS V8 3.9. It was overheating. I replaced thermostat housing kit with thermostat and coolant reservoir. the coolant temperature gauge stops straight horizontal, at this time the car diagnostic...


I dont think the coolant is boiling, I think you have an air bubble in your system wich is causing a air lock and youll need it flushed out. Your reservior cap should be tight always.. never loose this is an air tight system and your allowing it to get air in it. I have a 2002 linc ls and just had to pay 1000.00 to replace the system because I let an air lock go for too long and had so much back pressure I blew up my reservior.

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Replace your thermostat. first of all it is the cheapest.It is probably stuck in the closed position not allowing your coolant to flow.

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NEED TO CHANGE THERMOSTAT ON 03 KIA SEDONA. INSTRUCTIONS?


Here is a link:
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