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Hyundia are the best car in the world. Sorry, but they are getting better. I haven't heard of a harness issue. anyway the coils have the ground in common, but the hot wires are separate. probably got there coil packs from china( junk). And I have seen coil packs break down one after the other on different models. Hopefully the dealer is using a better grade of coils. You might even ask them to go ahead and replace the rest of them, seeing there is an issue there. You just never know.
Randy
check or relace your coil pack due to the fact that when a coil pack is going bad it usually looses its umph. when it get hot and that would explain random miss fires
Hello,the problem there is not a good spark in the compression chamber,so that it will develop a bad miss firing and you will not have a good acceleration.I advice you to change change all the spark plugs wire ,the wire lose the spark.Hope that help you
when the engine light flashes its telling you the car is miss firing and from your description it was...even though you had coil packs replaced that is by far the most likley cause .if they were genuine parts you will have unlimited milage 2 year warranty.get the fault code read to find out what cylider the misfire was on and change that coil pack..
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