Question about 2004 Hyundai Elantra

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2003 hyundai elantra gt overheat

My car is overheating within 1 mile of the starting point of travel from a cold start \\ no visible leaks or spots on ground when running or otherwise.. oil is not milky looking and all fluids are topped to their proper levels\\ radiator hoses feel as though they have pressure when the car is running \\ could it be a faulty thermostat or something else\\\ and if it is a themostat where in engine compartment is it located\\ have replaced them in Humvee s before but not 4 bangers

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  • gonzalesbc Sep 09, 2008

    I have a 2003 Hyundai Elantra and it overheat after driving about 1 mile. I took it in to the shop and they said it was a blown head gasket. Could this be the problem? It runs well just overheats, thought it might be the thermostat?

  • Anonymous Mar 12, 2009

    I replaced the radiator (it had a hole in it), thermostat and there are no visiable signs of anything leaking and it is still overheating

  • frame125 Mar 23, 2009

    I solved this issue by going to a parts store and getting a thermostat and a seal and some RTA sealent.. The location of the thermostat is under all the plastic coverings on the right side of the engine .. Remove those and the air box and air hoses .. If you follow the top coolant hose there is a metal fitting that is kind of oval with 2 bolts on opposite sides on the apexes of the fitting. The coolent hose goes into that .... Now under that fitting is the thermostat ..... B4 you remove the fitting, drain the coolent from the engine to a level that is below the fitting ( about 2 gallons). Note the orentatation of the themostat b4 you take it out and clean the the surfaces and then put everything back in the reverse order and fill the coolent back up. Now remember to check the coolent level the next day due to air working its way out of the system and, voila' your done.

  • hootiefan67 May 11, 2010

    i have a 2004 that over heats and can't locate the thermostat. can anyone help me find it.



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If the upper radiator hose is cool, but the engine is overheated than this could be a sign that the thermostat is stuck. By the way, the thermostat is at the end of the upper hose in the metal housing. There are two bolts holding it to the engine.

Posted on Sep 28, 2008

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Thank you for your help! I took my car in for a second opinion and the mechanic said it was the thermostat! It is now running great and only cost me what the first mechanic said it would just to look under the hood for the head gasket! I saved so much money! Thanks again! :)

Posted on Sep 29, 2008

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My car is overheating and nothing else

Posted on Jan 17, 2009

Well I thought it might be the thermostat and it was. After I replaced it in my driveway with some simple tools, and an inexpensive part, along with a gasket, the problem was immediatly solved.

Posted on Sep 30, 2008

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Pay close attention to the 'fans' part of the instructions. ;)

Get more great (money saving) tips and tricks about your Hyundai from:
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