Question about 1997 Hyundai Sonata

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Temp gauge goes to hot then cools fairly fast is not consistent fans are working, does not feel like water running through system. Is it the thermostat or sensor or both ?

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  • greywolf2673 Jan 26, 2009

    temp starts to go up as it idles then after driving for a bit temp drops and blows cool air through vents?

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More than likely you need to replace the sensor. if you are not noticing a really warm to hot hose, then the sensor is bad.

Posted on Sep 22, 2008

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It could be the head gasket, thermostat, or low coolant     

Posted on Jan 28, 2009

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