Question about 2001 Kia Optima

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Will start but rpm gauge jumps up and down then it dies

Will start but RPM gauge jumps up amd down then stall out ond die

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The problem you describe has NUMEROUS causes. Most common of these is a COIL is going bad. The RPM gauge gets its signal from the ignition coil/crank sensor circuit (could be either one OR could be the wiring between the engine control module (ECM) and the engine components. 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

  • squijee_bay
    squijee_bay Sep 30, 2012

    when i took to mechanic computer said somethin bout crankshaft position sensor when i had a diff mechanic look at it he said that my fuel pressure is low

  • willie muckelvaney Jun 24, 2013

    abs,amp,ddm,dds,dim,ipc,ipm,irc,lrd,msm,pcm,pdm,rcc,rfa,rim,rrd,sdm,ttm,vtd,these r all the codes

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