Question about 2004 Kia Optima

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Engine light on rpm gage not working

2005 kia optima check engine light is on and rpm gage is not working at times

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  • Anonymous Mar 13, 2014

    will work then stop then work

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Cylinder 1 misfire change spark plugs i just had that problem. you can still drive it it wont hurt the engine.

Posted on May 02, 2010

  • MarkEck0911 May 17, 2012

    I have an 05 Optmia, I replaced both spark plugs, replaced one of the Ignition Coils, the other coil was replaced about a year ago. The RPM guage\ tach still does not work. I had a mechanic tell me that he thought it my be a sending unit that has gone bad. He said they are fairly easy to replace and that I could go to an Auto Parts store and that they should be able to tell me where they are located at on the engine.

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A cylinder misfire WILL NOT cause the tach to not respond. Check your sensors. IG failure sensor.

Posted on Jan 03, 2013

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