Question about 1999 Hyundai Sonata

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Stopps When is hot

Engine cut out when hot, and not starting untill cool down

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  • charlieladis May 13, 2009

    Thanks for your answer i wos thinking along the same line


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The problem is your crank shaft position sensor. It is usually behind the harmonic balancer.

Posted on May 13, 2009

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The symptoms are too vague. I need to know if the engine light is on, if so have the codes read. If the engine light doesnt come on then maybe there is a problem with the fuel system (a clogged filter). If possible, when the problem occurs, see if fuel and spark is still there.

Posted on May 13, 2009

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Hyundai's are notorious for getting catalytic converters to become blocked and then the car will stall and not restart until cool. You will be able to see this very clearly at night after driving the car a while - stop and open the hood. You will see the exhaust glowing red hot. Solve this by replacing the cat converter.

Posted on May 13, 2009

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