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Old 09-23-2006, 07:15 AM   #1 (permalink)
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I have a check engine light that lights up my 1999 Taurus (3.0 vulcan) and my OBDII code reader report the oxygen sensor is faulty. Bank 1, sensor 2 needs replacing. Where is it? I believe there are 4-- O2 sensors on this car and I see right one at the front of the car, as you look down into the engine compartment; this one is attached to the exhaust right after the manifold but I'm not sure if this is the one to replace.
Todd Kobberdahl
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Old 09-23-2006, 07:38 AM   #2 (permalink)
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The second sensor is located after the catalytic converter. There is one before the converter, which is the one you saw. The other one is underneath the car.

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Old 09-23-2006, 10:15 AM   #3 (permalink)
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Bank 1 is the cylinder bank near the firewall, Bank 2 is near the radiator. Sensor 1 is before the cat, sensor 2 is after the cat.

underneath the car, look for the exhaust down pipe from bank 1. You should see the catalytic converter before the area where the two downpipes Y into one pipe. There is one cat on each down pipe. Bank 1 Sensor 2 will be located on the engine's rear down pipe after the cat.
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