jarven93

Can anyone tell me how to wire in a 5 wire bosch 4.2 o2 sensor or even just tell me what the 5 wires are?? witch ones ground, positive ect.... for all 5 wires?? thank you jarven93 will be installed on 93 civic ex d16z6 p28 ecu vtech. wire colors are...RED, Black, yellow, grey , white.

92TypeR

http://wbo2.com/cable/default.htm

http://wbo2.com/cable/lsuconns.htm

jarven93

can you wire directly to a air/fuel gauge ?

dpetro1

what are you trying to do? use it as a wideband? you cant just wire it straight to a gauge you are gonna need some type of wideband controller.

welfarepc

not true when you have vtech there to help. trust that

dpetro1

huh? is this sarcasm..im confused

HiProfile

I think so, since vtech is also the proper spelling for a children's learning toy company.

ALL widebands require a controller to interpret the output, as well as calibrate the sensor and control it's heater element. The stock ecu would only run the heater for the first 30 seconds or so, but have no way to guess the output. It's not linear compaired to the output of a wideband controller, and definately not like the 0-1 volt output of a narrow band.

Cliffs: direct-wiring a 5-wire should NOT be done.

jarven93

K thanks guys ill just get a sensor/ gauge/ and control box, kit any recomendations??? think cheap, but as reliable as it can get.... thanks

boostB4beauty

Just go AEM.
Nice digital guage, generic podsize, etc.
Good bang for your buck.

dpetro1

i swear by plx. get the sm-afr w/ gauge

HiProfile

Of all the wideband complaints I've heard of, AEM accounts for at least half of them. This includes joe q public installing it at the curb, and professional tuners trying to get it working with their PC. They test unfavorably with other widebands in comparo tests.


PLX is a good all-purpose unit, but I personally like Innovate due to both price and bonuses like a complete (and free) graphing/datalogging program. It's just that some people who can't wire a flashlight to save their lives have issues with grounds with LC-1's.

Some people also wire their programable wideband output to a (cheap $15) programable digital 0-2 volt gauge. That way 10:1 afr shows as 10.0 volts and 20:1 shows as 20.0 volts. The meter allows you to move the decimal one spot, hence displaying 2 volts as 20.0