Question about Hyundai Elantra

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58.5K miles - 2004 - car overheated on expy. Coolant Temp gauge went off the scale and motor died. Dealer analysis: valve broke & damaged sparkplug cyl & piston. overheated coolant damaged radiator & hoses. resulting rubber/plastic particles got in engine thru coolant system and ruined rest of engine. replacement of engine required. dealer likely will suggest coolant had to be changed at 30K miles - I think the thermostat failed or a valve stem broke - either causing motor to fail and overheat or overheat and then damage the valves. Could used insight into coolant change out and failure of heating system. Also, the engine temp was perfect just before it went off the scale and the motor failed. Please advise asap as it's in the dealers waiting to see if coverage by warranty will be given. Thanks. Jim

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Hi,

Whatever the reason for the engine siezing, it will be to your advantage to replace the radiator as debris may already be blocking a number of the lines.

As to the overheating, the most likely reason is a failed water pump (most likely), or a thermostat stuck closed (least likely), or a coolant leak (noticeable). Since engine would be replaced, the water pump and thermostat would also be replaced and the leak would be verified upon installation of the new engine.

Incidentally, I was made to understand that Hyundai warranties their drivetrain for 10 years or 100,000 miles. I believe the engine is a part of the overall drivetrain system.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 29, 2008

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