Question about 2002 Kia Optima
Car came in with e ligth on said 02s on bank one slow replace o2s a run smog car fail nox 1700 @ 15 and 1800 @ 25 heeelp
If the engine computer says that you have a slow O2 sensor what it means is that the sensor does not react as quickly as it should and it needs to be replaced. nox is oxides of nitrogen, a product of too lean combustion which causes cylinder temps to go too high. it sounds like replacing O2 sensor will make it happy. engine computer is having a hard time controlling lean/ rich fuel mix because sensor is slow to register changes, needs to have response time in milliseconds or engine computer can't operate properly. O2 sensors do wear out, normal service item. hope that helps
Posted on Jun 17, 2009
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Posted on Jan 02, 2017
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