Motor Vehicle Maintenance & Repair Asked by Joe Bartos on November 11, 2020
I have a 2018 Sonata that has started to have a rough idle at times when in drive, stopped and with no HVAC on. I had to dealer, they stated there was a misfire and changed one plug and coil. This is still happening. Thoughts?
I know for the 2018 Elantras there's a big misfire thing going on it has something to do with the ecm creating a bad misfire the only thing that is suggested that I heard that works is to replace the plugs and to replace the coils with green dots on the top. Hyundai is still waiting for the update to be released from the engineers
Answered by E.Flint on November 11, 2020
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