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The one closest to the exhaust manifold is the upstream O2 sensor.
There is no sensor by this name in a toytota. The Toyota air/fuel sensor is also known as the upstream air/fuel sensor. The Toyota downstream sensor is also known as the downstream O2 sensor.
For the 1993 Toyota Tercel, the O2 sensor has three different wire colors. These colors are: black, blue, and white.
no. the upstream sensor is the one before the catalytic converter and the downstream is the one after
Right upstream oxygen sensor heater failure.Right upstream oxygen sensor heater failure.
I found some good reference info on this topic at: http://www.4crawler.com/4x4/O2SensorWireColors.html Accordingly the sensor wire colors for Toyota O2 sensors (from the sensor to the plug) would be as follows Blue = Sensor + White = Sensor - Black = Heater Black = Heater
the black wires are for the heater circuit, the blue and white are the sensor wires. the universal sensor probably wont work though, its best to bite the bullet and get the correct one from toyota.
Can you show me a diagram of the upstream oxygen sensor on a 3.5l liter Oldsmobile Intrigue engine?
Depends on what the problem is or what code was set.
Sensor 1 would be UPSTREAM before the exhaust enters the catalytic converter
There are two upstream O2 sensors 4.0L V6 Upstream & Downstream Sensor Locations * Both upstream sensors are screwed into the exhaust pipe right below the exhaust manifold flanges * Both downstream sensors are located in the catalytic converters 4.6L V8 Upstream & Downstream Sensor Locations * The left upstream sensor is screwed into the exhaust manifold right above the manifold flange and the right upstream sensor is screwed into the exhaust pipe right below the exhaust manifold flange * Both downstream sensors are located in the catalytic converters
They should be in the exhaust system close to the engine ( either in the exhaust manifold outlets or the exhaust pipe ) before the exhaust enters the catalytic converters Bank 1 is the passenger side of the engine and sensor 1 is the upstream sensor Bank 2 is the driver side of the engine and sensor 1 is the upstream sensor on that side