Question about 2000 Hyundai Sonata

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Transmission shifts down to first at high speeds

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  • mrshicksdotc Jun 25, 2009

    hi there. our check engine light came on quite awhile before this started. Don't know if it makes a difference or not..thanks.
    Denise


  • mrshicksdotc Jun 26, 2009

    Thanks, I will get that checked..at least I have a starting point now..
    Denise


  • Paul McGrath
    Paul McGrath May 11, 2010

    Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there.

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I hate repeating myself, but here goes... Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there. So, check for codes... let us know what you find... we can go from there.

Posted on Jun 26, 2009

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