Question about Ford Ranger
It could be the problem or he just wants to make a lot if money. I had a similar problem and it turned out to be electrical. I had another component out that caused an abnormal electrical condition, it could be happening to you. Check to make sure the sensor is within it electrical limits, (volts, amps, and ohms) and then refer to your vehicles electrical schematic to find relative components within the system. Don't go rippin into you motor, yanking off the heads, until you eliminate the problem as being electrical. get a good multimeter and remember, its only a 12v system. good luck
Posted on Aug 15, 2008
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Posted on Jan 02, 2017
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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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