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4. Wideband O2 sensor
4.1 NTK sensor
The Alcohol O2 was developed to use a NTK wideband O2 sensor that is
used in engine laboratories, because of its extreme accuracy and speed in
reading at different AFRs. To purchase the NTK sensor, contact FuelTech.
4.2 Bosch LSU 4.2 sensor
As a lower cost alternative, you can use the same Bosch LSU 4.2 sensor
used in WB-O2-Meter Slim, with Bosch part number 17014, 0258007057
or 0258007351 and VW 021-906-262-B.
4.3 O2 sensor installation
The sensor must be inserted in the exhaust system in an angle between 10
to 80 degrees to horizontal position, that is, with its end downward, in such
a way that steam droplets cannot be accumulated between the body of the
sensor and its ceramic part, which could damage the sensor.
When installing the sensor after the turbo, it must have its tip exposed to the
exhaust gas flow. When placing it before the turbo, on the exhaust manifold,
its tip must stay hidden from direct exhaust gas flow.
The sensor must stay away from the cylinder head and from areas where one
cylinder might affect the exhaust air more than the others. Avoid placing the
sensor close to the exhaust manifold joints, as some allow the inflow of air,
resulting in incorrect readings.
The sensor must never be installed in the exhaust in the 6 and 12 o'clock
position. The correct is to install the sensor in the 2, 3, 9 or 10 o'clock positions.
Alcohol - O2
EN
5
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