Question about 2003 Ford F150 Regular Cab

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My 2003 ford 150 is stalling and my friend had a reader and the o2 sensor came up bank 1 not sure which one that is and how to properly change it

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The O2 sensor bank 1 is on the passenger side along the exhaust down pipe before the Catalytic Converter. Note and bad or faulty O2 sensor will not cause the engine to stall. Good luck and keep me posted, be glad to answer any questions you may have. oh and to replace the O2 sensor is as simple as replacing a spark plug. Auto Zone has O2 sensor and they can give you the step by step instructions to replacing the O2 sensor with common tools and if you need a O2 socket, they can give you one as a loner. 

Posted on Jul 28, 2009

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