Slant Six Forum :: factory wideband o2 ??

A variation on the zirconia sensor, called the "wideband" sensor, was introduced by Robert Bosch in 1994 but is (as of 2006) used in only a few vehicles (such as the Subaru Impreza WRX when equipped with a manual transmission). It is based on a planar zirconia element, but also incorporates an electrochemical gas pump. An electronic circuit containing a feedback loop controls the gas pump current to keep the output of the electrochemical cell constant, so that the pump current directly indicates the oxygen content of the exhaust gas. This sensor eliminates the lean-rich cycling inherent in narrow-band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor. UEGO sensors are also commonly used in aftermarket dyno tuning and high-performance driver air-fuel display equipment. The wideband zirconia sensor is used in stratified fuel injection systems, and can now also be used in diesel engines to satisfy the forthcoming EURO and ULEV emission limits.

Wideband sensors have three elements:

Ion Oxygen pump
Narrowband zirconia sensor
Heating element
The wiring diagram for the wideband sensor typically has six wires:

resistive heating element (two wires)
sensor
pump
calibration resistor
common

Author:	Volare4life [ Sat Oct 16, 2010 11:21 am ]
Post subject:	factory wideband o2 ??
Hi all i was just wondering if any factory cars came with wideband o2 sensors stock, how do you ID them and what the difference is between 1,2,3, and 4 wire o2 sensors, -Mike

Author:	emsvitil [ Sat Oct 16, 2010 3:33 pm ]
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1: Unheated narrowband. Wire is signal output 2: Never heard of a 2, but if they exist ; Unheated,1 wire is signal output, other would be signal ground wire 3: Heated narrowband. One wire is signal output, 2 wires are for heater 4: Heated narrowband. One wire is signal ouput, one wire is signal ground, 2 wires are for heater. Both 1 & 3 rely on a good chassis ground...... There are a couple of cars that came with widebands, can't recall what they are. And there's more than the two primary technologies (the primaries being the almost universal narrowband, and the wideband used by innovate and others ). I'm not sure if the others are narrowband only, or narrow and wide.....

Author:	Sam Powell [ Sat Oct 16, 2010 5:11 pm ]
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I got the impression from the Inovate literature that the wide band sensor they use comes in some VW's. Cannot verify that. But, it sticks in my mind that is the case. Sam

Author:	Volare4life [ Sat Oct 16, 2010 5:24 pm ]
Post subject:
well i found this off of wikipedia Quote: A variation on the zirconia sensor, called the "wideband" sensor, was introduced by Robert Bosch in 1994 but is (as of 2006) used in only a few vehicles (such as the Subaru Impreza WRX when equipped with a manual transmission). It is based on a planar zirconia element, but also incorporates an electrochemical gas pump. An electronic circuit containing a feedback loop controls the gas pump current to keep the output of the electrochemical cell constant, so that the pump current directly indicates the oxygen content of the exhaust gas. This sensor eliminates the lean-rich cycling inherent in narrow-band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor. UEGO sensors are also commonly used in aftermarket dyno tuning and high-performance driver air-fuel display equipment. The wideband zirconia sensor is used in stratified fuel injection systems, and can now also be used in diesel engines to satisfy the forthcoming EURO and ULEV emission limits. Wideband sensors have three elements: Ion Oxygen pump Narrowband zirconia sensor Heating element The wiring diagram for the wideband sensor typically has six wires: resistive heating element (two wires) sensor pump calibration resistor common looked up a o2 for a subbie and its a upstream sensor http://www.autozone.com/autozone/parts/ ... 98%2C97999 $396.99 just for the o2 sensor !!!! -Mike

Author:	Volare4life [ Sat Oct 16, 2010 5:31 pm ]
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makes this kit from summit at $249 seem very reasonable http://www.summitracing.com/parts/INN-3802/ -Mike

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factory wideband o2 ?? https://slantsix.org/forum/viewtopic.php?t=42284	Page 1 of 1

Author:	Volare4life [ Sat Oct 16, 2010 5:43 pm ]
Post subject:
better deal yet only $209 and digital http://www.summitracing.com/parts/INN-3795/ -Mike

Author:	Sam Powell [ Sat Oct 16, 2010 7:16 pm ]
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Go to DIYAutoTune.com and look at their Inovate sensor kits. They are about the same price. I know mine died, but Matt claims they have improved them, and that they will stand behind this one if I send it back to them. Sam

Author:	Doctor Injector [ Sat Oct 16, 2010 9:17 pm ]
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I have had customers tell me that the Honda CRX came with a wideband o2 sensor. I think around 1989 or so.

Author:	Pierre [ Sat Oct 16, 2010 9:20 pm ]
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There are different wide band types just as there are different narrowband types. I don't remember the specifics but one kind was the most expensive. The ones used in the innovate kit also used on VW's as Sam mentioned is relatively inexpensive, usually around $50 for a bosch unit. Don't quote me on this but IIRC bosch is the OEM for vw so it is essentially the same part you would get at the dealer. I just looked up a 2000 Volkswagen Jetta GLX 2.8L pre-catalyst sensor. Came back to a bosch 17014. I can't be certain but it looks exactly like the one in my innovate kit and also matches the price I remember them being, $52.

Author:	Joshie225 [ Sat Oct 16, 2010 9:46 pm ]
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The 49-State lean burn Honda Civic VX (1994-1995 I believe) used a wide band O2 sensor, but I don't know if it's of the proper type to use with the aftermarket controllers and readouts.

Author:	Charrlie_S [ Sun Oct 17, 2010 4:39 am ]
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Can the WB sensor be used with leaded race gas? How about Methenol/Ethenol?

Author:	emsvitil [ Sun Oct 17, 2010 5:29 am ]
Post subject:
Quote: Can the WB sensor be used with leaded race gas? Yes, but only for a short time period until the lead screws up the sensor Quote: How about Methenol/Ethenol? Yes. Just remember that the AF isn't 14.7:1........

Author:	Matt Cramer [ Mon Oct 18, 2010 1:05 pm ]
Post subject:
Quote: The 49-State lean burn Honda Civic VX (1994-1995 I believe) used a wide band O2 sensor, but I don't know if it's of the proper type to use with the aftermarket controllers and readouts. Several of the earliest wideband controllers were designed around that sensor, but the supply dried up and so most of the newer ones don't support it. A lot of VWs used widebands; if you look closely at the connector on an LC-1, you'll see it stamped with a VW logo and part number.

Author:	Volare4life [ Mon Oct 18, 2010 5:55 pm ]
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Intresting so far, lot of good info so far, is there any particular spot to mount the o2 sensor ?? like how far down the exhaust should it be mounted ?? what if you run a turbo, obviouslly it will need to be mounted further down because of heat, but how much further down ?? -Mike

Author:	Matt Cramer [ Tue Oct 19, 2010 11:10 am ]
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Rule of thumb, keep the temperature at 900 degrees F or lower where you put the wideband. Generally 18" downstream of the turbo is far enough.

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