Hi, wanna ask, the AFR gauge, how is this connected, do i have to get a boss welded into the exhaust to fit a sensor or can the wires get rigged to the lambda sensor without the hassle of welding a boss??
J
J
AFR gauge --------------
- Thread starter --alpina--
- Start date
OP
OP
Ok i thought with the wires provided with the gauge you actually wire them to the lambda / O2 sensor and should pick up! ive seen kits that has a sensor with it and you have to weld a Boss to the exhaust to fit the sensor for the guage to work whilst the original sensor is used etc!
J
J
pollyp
Club Member
a normal narrowband O2 has 3 wires (signal, heater +ve, heater -ve).
a wideband O2 have over 5 wires (signal, heaters, pumps, ground, temp, etc) and is controlled/monitored/interpretted by a dedicated controller unit.
some controllers feature a programmable analogue output feed for either an analogue gauge and/or the ECU analogue O2 input.
there are two setup options I know:
1. seperate independant sensors.
- normal narrowband O2 connected to the ECU.
- seperate wideband O2 sensor screwed onto a seperate bung further down the exhaust (sensor must be located a min distance away from the manifold to keep heat low)
- wideband goes into a wideband controller
- wideband controller then feeds a digital or analog signal of the interpretted mixture value to a dedicated gauge
2. AFR gauge and ECU O2 signal from single wideband sensor.
- single wideband sensor screwed into the exhaust (check the location is within the sensors heat range)
- wideband goes into a dedicated controller
- wideband controller then feeds a prgrammable digital or analog signal of the interpretted mixture value to a dedicated gauge and/or the ECU O2 analogue input
a wideband O2 have over 5 wires (signal, heaters, pumps, ground, temp, etc) and is controlled/monitored/interpretted by a dedicated controller unit.
some controllers feature a programmable analogue output feed for either an analogue gauge and/or the ECU analogue O2 input.
there are two setup options I know:
1. seperate independant sensors.
- normal narrowband O2 connected to the ECU.
- seperate wideband O2 sensor screwed onto a seperate bung further down the exhaust (sensor must be located a min distance away from the manifold to keep heat low)
- wideband goes into a wideband controller
- wideband controller then feeds a digital or analog signal of the interpretted mixture value to a dedicated gauge
2. AFR gauge and ECU O2 signal from single wideband sensor.
- single wideband sensor screwed into the exhaust (check the location is within the sensors heat range)
- wideband goes into a dedicated controller
- wideband controller then feeds a prgrammable digital or analog signal of the interpretted mixture value to a dedicated gauge and/or the ECU O2 analogue input
pollyp
Club Member
the 2 white wires on the lambda are both heating wires iirc paul (2 channel)
yes heater +ve & heater -ve
frank
Club Member
not both heater +ve paul ? and earthed via the body (later 4 wire lambda with a separate earth)
OP
OP
Ok so if I were to get the guage and wite it to my current lambda sensor would it work?
J
J
OP
OP
All i need is a reading nothing that does more to be honest!!
