Are all Bosch LSU 4.9 sensors the same?
Most Ford products that either had a facelift, new body, new engine, etc post 2010-ish have a Bosch LSU 4.9. They’re all varying part numbers due to mostly different length cables, but they’re mostly the same sensor.
How does a 3 wire lambda sensor work?
In the three-wire lambda sensors, is a special heating element inside which is constantly turned on when the engine is working and thus it’s reducing the heating time of the sensor to the working temperature. This allows installation of the sensor on the exhaust manifold, near the catalytic converter.
Are all wideband sensors the same?
The answer is no. There is significant difference between the controllers and circuitry used in the various meters. How the sensor’s heater is controlled and how the pump current is switched and controlled, for instance, are critical for accurate sensor operation.
What is LSU oxygen sensor?
Menu. This sensor is designed to measure the proportion of oxygen in exhaust gases of automotive engines (gasoline or Diesel).
How many wires does a wideband O2 sensor have?
If It Is A Wideband Sensor: If your sensor is a wideband sensor, there will be TWO SIGNAL WIRES – these are called the “Current Pump” wires. The voltages on these current pump wires varies from manufacturer to manufacturer.
How many wires does a wideband o2 sensor have?
How do you test a wideband oxygen sensor?
Performing a snap throttle test is a very quick and easy way to test the response of an O2 sensor. With a wideband sensor, the reading will be essentially the reverse of a narrowband sensor. A theoretical waveform for this test is shown in figure 3.
What is the difference between wideband sensors and traditional sensors?
The control of the heater circuit in wideband sensors is more intricate than for traditional sensors. The heat at the sensor has to be maintained within a specified range and the heater is usually controlled using PWM. The heater failing in a wideband sensor is equivalent to the whole sensor failing.
What are wideband O2 sensors?
Wideband O2 sensors (also known as air-fuel ratio sensors or AFR sensors) were created to allow faster monitoring and more precise control of the air/fuel ratio of internal combustion engines over a much wider range of air/fuel ratios than traditional sensors.