Question about 2004 Kia Optima

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My car is not starting current is coning in only one coil

I have checked current is coming in 1 coil other coil current is not coming. i think ecu having problem how to fix it

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  • 4 Answers

Do you have a DTC and what engine is this?

Posted on Apr 18, 2014

  • Sherri Willis
    Sherri Willis Apr 18, 2014

    There should be a relay in the console next to the shifter if it has a floor shifter. You may also have a short in your wiring harness.

  • Sherri Willis
    Sherri Willis Apr 18, 2014

    If you would like to provide further information we may be able to assist more.

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check all fuses first, every time, something fails EFI.
the scan tool will tell you why 90 % of time.
connect scan tool
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crank for 5 seconds, see scan tool show 300 RPM? about.
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did you check for spark directly at the 1 coil car or at all 6 coils for 6 cop coil cars?

cops are coil over park plug, i think your car is 1 coil, had a 99 jeep.
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to a test spark plug, Y/N
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Both engines have ECU.
Both need good fuses to power ECU and coils.
Both engines need working CMP.
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A $50 tool that is indispensable.
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