The 02 sensors are 3 wire. Positive, negative, and the sensor wire.
I wasn't able to find any specs on voltage in the chilton's manual.
************************************
Josh Colombo
jcc189@psu.edu <mailto:
jcc189@psu.edu>
"Life, an ever-changing melody
of beats and rhythm" - ME
************************************
-----Original Message-----
From: mike p. [mailto:
ob1poor@yahoo.com]
Sent: Tuesday, November 13, 2001 31 PM
To:
BC-BFLegacyWorks@yahoogroups.com
Subject: [BC-BFLegacyWorks] Re: whats next to replace?
well, to the best of my knowledge, yeah to test the sensor you need
to have the car running and take the readings while it warms up
(should read a steady .1-.2 volts) and when the sensor hits it's
operating temp(fluctuates between .1 and .9) but that's like 600
degrees or something so it gets really hot and can melt your wires to
the voltmeter if you're not careful. also you need to probe the
signal wire which may be a bit difficult without a schematic or
something. the sensor has 4 wire terminals correct? well it's one
of those. i guess you could try em and see which registers. you'd
have to have the + on the signal wire and the - of the voltmeter on
the ground wire of the sensor. if you get a wire with high voltage
(+12volts) that's not it, if you get one with 0 volts, that's the
ground, if you get one with .2.6 volts or something near that, that's
the signal wire. you should be able to put the probe down into the
back of the connector so it touches the terminal, if you can follow
the wiring up away from the sensor itself you could probably probe
there to and eliminate the worries of melting your gear but you'd
probably have to bear a bit of wire in order to probe unless you can
find another connector. well, my brains fried now so i hope that
helps, any other questions post em and i'll try to answer.
--- In BC-BFLegacyWorks@y..., Nissan-Subaru <nissans14@y...> wrote:
>
> i'm not sure on how to test this... i have a new o2 sensor so i
know that works.. so do i unplug the harness and then take my
measurments there? and does the car need to be on? please help
> "mike p." <ob1poor@y...> wrote: i'm pretty sure it should be a
steady signal of about .1-.2 volts on
> a cold engine and a varied signal of .1-.9 on an engine that is up
to
> normal temp(in closed loop). if it doesn't reach closed loop(i.e.
> the fluctuation) it's shot. hope that helps.
>
> --- In BC-BFLegacyWorks@y..., Nissan-Subaru <nissans14@y...> wrote:
> >
> > Yes code 32... Is anyone able to give me what the mesurments
should
> be? (for a turbo legacy 02 sensor)
> >
> > I would greatly appreciate it!
> >
> >
> >
> > Thanks!
> >
> > John
> > Josh Colombo <jcc189@p...> wrote: When you say 02 code, I'm
> assuming you're getting a code 32 correct?
> >
> > What I would do is test the voltage coming out of the 02 sensor.
> > Compare that to what it should be, if it is good, you have
problems
> in
> > the wiring harness or some where later down the line in the
wiring
> loom,
> > which is not a fun thing to track down. This is most likely why
> you are
> > seeing such poor mileage and crappy boost. You need to get that
02
> > sensor or wiring fixed, and that should fix your problems. The
> computer
> > sees that the 02 is messed up and is adjusting everything else
> > accordingly.
> >
> > Josh
> >
> > -----Original Message-----
> > From: Nissan-Subaru
> > Sent: Mon 11/12/2001 8:27 AM
> > To: BC-BFLegacyWorks@y...
> > Cc:
> > Subject: [BC-BFLegacyWorks] whats next to replace?
> >
> >
> >
> > After new
> >
> > Plugs
> >
> > Wires
> >
> > 02 sensors
> >
> > Multiple ecu resets (it still stores an 02 code after
> replaceâEUR¦ I
> > even left it unplugged for 24 hours)
> >
> > UR pulley
> >
> > Change in driving habits (drive like a grandma now)
> >
> > K&N panel Filter
> >
> >
> >
> > IâEUR(tm)m still getting 13-15mpg no matter how or where I
> driveâEUR¦ This
> > is the same thing I got before I did the above.
> >
> >
> >
> > It also seems like itâEUR(tm)s still unable to put all the
power
> to the
> > ground sometimesâEUR¦
> >
> > Its also boosting steady at 8 ½
> >
> >
> >
> > WhatâEUR(tm)s next to replace?
> >
> >
> >
> > Thanks
> >
> > John
> >
> > 91 Sport Sedan
> >
> >
> >
> > _____
> >
> > Do You Yahoo!?
> > Find a job, post your resume on Yahoo! Careers
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