Mechanics

OXYGEN SENSOR

2003 Ford Taurus

Engine Mechanical problem
2003 Ford Taurus 6 cyl

the code that comes up says it is the downstream sensor but my friend says that wont affect the way it functions and when I looked it up it says the upstream is the one that controls the way the car runs, it is stalling and just does not stay running well at all is it the downstream sensor or upstream?
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Tatyler
October 17, 2008.



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