Question about 2007 Lincoln LS
passenger side of manifold, before the catalytic converter. this system may have more than one on the frontside of the cat.
Posted on Feb 27, 2009
SOURCE: Not passing smog check
bank 1 is pass/side exhaustpipe/converter bank 2 is on the driverside,this car has two converters, so you have 4 oxygen sensors, one before and one after the converter on each side, so bank 1 sensor1 is pass/side before the converter, bank 1 sensor 2 is pass/side after the converter, then bank 2 sensor1 is driverside before the converter, before means starting at motor, then bank 2 sensor 2 is driverside after the converter, heres a diagram to help, i hope this is helpful.
Posted on Feb 06, 2010
bank 1 and bank 2 refer to the positioning of the sensor on the car, bank 2 just means the second one, so if you start out at your exhaust manifold and inspect the piping going back, the second O2 senor you find will be the one you need to change, it will likely be around or near the catalitic convertor.
Posted on Mar 21, 2010
drivers side bank of cylinders in the exhaust pipe before the catalytic converter, u must get at it from under the car
Posted on Apr 30, 2010
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Fig. Fig. 3: Oxygen sensor-4.3L engines
Fig. Fig. 4: Oxygen sensor-5.0L and 5.7L engines
Fig. Fig. 5: Oxygen sensor-7.4L engines
Oxygen sensors are always numbered like this:
Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2
Some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2
Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.
Sensor 1 is always the upstream sensor (the one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.
Hope helps (remember to rate this).
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