Question about 2001 Hyundai Elantra

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Car rpms goes up and down when driving or idling. It does it randomly can drive for a half day without it doing it then do it all the time

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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.

Posted on Jun 20, 2009

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Posted on Jan 02, 2017

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