Question about 2004 Kia Sorento

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Several weeks ago my 2004 Sorento started to overheat. Took it in and had a busted hose which was fixed and antifreeze was added. Ran great for about a week then started doing the same thing. Took it in again. No antifreeze. Added more ran it for 1 hour to check for leaks and also checked engine to make sure it wasnt leaking in engine. There was nothing. It has been little over a week and now its starting to do the same thing again. I dont know what could be causing it. Any suggestions?

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Hello! Most probable cause is a blown head gasket...Is there an abnormal flow of water/coolant from exhaust? Any oil in coolant recovery tank? These are signs of blown head gasket...Loss of coolant without visible signs...

Guru............Saailer

Posted on Aug 06, 2010

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  • riann_allen Aug 06, 2010

    Thanks for your response. That was the first thing we checked. It is not leaking from exhaust and there is no oil in coolant tank and we also checked the oil to make sure that there was none in there.

  • David Burbee
    David Burbee Aug 06, 2010

    Hello! The question then becomes; At what rate is the loss? Fill coolant to proper level... Start the vehicle...Turn heat all the way up...Blower fan on high...Hood open...Using a bright light...Look closely for visual and/or smell of coolant...Look at all hose connections, radiator and water pump...Mark the recovery tank level and monitor loss...Recently I had a similar situation...It was a heater hose with a hole, facing downward...Sneaky but solvable...Coolant would evaporate rather quickly...Stay with it...It will show.................Saailer

  • riann_allen Aug 06, 2010

    Hello...Matter of fact when I first started having problems to begin with, thats what was wrong. The leak was in the hose on the bottom, so it was leaking out and I never knew. Once we fixed that and it started doing it again then we did let it run and checked for leaks and there was nothing. I was told when the hose was replaced that with the temp. going up like it did, that it may have burnt out the thermostat, but at the time (3 weeks ago) there were no signs of it happening. I am wondering if that could be the problem too.

  • David Burbee
    David Burbee Aug 06, 2010

    Hello! It is always a good idea to return to the scene of the crime...A thermostat that will not open will cause the temperature gauge to peg and coolant to boil out...If you have the ability, change the thermostat before you do anything else...Keep me posted...........Saailer

  • riann_allen Aug 06, 2010

    Thanks for your help. On my way to the mechanic now!! We will see what he thinks. Have a good day!!!

  • riann_allen Aug 09, 2010

    Just thought I would let you know...the thermostat was open, however I had a hole in the overflow reservoir. So with the thermostat open pushing all the fluid out and then the hole in the reservoir, all of my fluid was going right out. Thanks for all of your help.

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Thermastat problem? Antifreeze not circulating properly? Radiator needs flushing?

Posted on Aug 06, 2010

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