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Q: how do you replace oxygen ( sensor O2) on 2001 Kia Sephia

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Exhaust System O2exprt
(1) Answer
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It's not that difficult any parts store has the tool made by Lilse its cheap. Be patient do not strip the O2 sensor in trying to remove it. Retrieve the fault codes stored by using a scan tool and make sure you identify the right sensor that needs to be replaced. Oxygen sensors are identified by bank and sensor position. Sensor 1 is always pre catalytic converter, sensor two is always post catalytic converter. If an engine is a 4 or 6 cylinder engine the whole engine is considered bank 1, if an engine is a V6, V8, V10....., the engine bank containing cylinder number 1 (first cylinder in the firing order) is considered Bank 1, the other bank is considered Bank 2. Interpretation Oxygen sensor designation B2S1 refers to Bank 2 Sensor 1, it will be the sensor on the engine side of the catalytic converter in bank two. Check this link to determine the cylinder that contains cylinder number 1. http://www.wellsve.com/custom_searches/ds_firing.php Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners. www.kiatechinfo.com
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