Elvin Westcott Posted on Apr 14, 2017

2002 kia optima has intermittent miss; usually upon first cranking, sometimes when stopped at redlights (misses so bad almost dies). About 9 months ago I replaced plugs and wires, I bought Iridium plugs and the best wire set I could by from Oreilly's, this seemed to fix things. Now the problem is back. I notice that one of the coil packs connectors(internally) is a brillant golden finish and one is black and smutty. I have no check engine lights on or trouble codes in the computer. Is it worth the $100 TO $150 to replace this coil pack, to see if this is my problem or should I look elsewhere for the problem?

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Peter Pas

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Posted on Apr 14, 2017

Peter Pas

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I would replace all of the coil packs. If one goes bad the others are soon to follow. Also one weak one can kill the others. You may want to consider using non-OEM if the dealer wants $100 or more per coil. You can find non-OEM for maybe $30.

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Sean Wright

2045 Answers
Posted on Aug 08, 2010

SOURCE: engine code miss fire cylinder #1, spark plugs and

your correct the coil pack is probably the culprit

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

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2002 Kia Optima stalls out dose not set a code you can be at a stop light and it will die or can be at 40 mph and it will die all this stalling and it dose not set a code car has 55000 miles on

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2002 Kia Optima stalls out dose not set a code you can be at a stop light and it will die or can be at 40 mph and it will die all this stalling and it dose not set a code car has 55000 miles on

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