[V8] "Major Surging"

Mon Jul 19 16:10:33 EDT 2004

Black is definatly signal. White is for the heater - polarity does not matter.
If you have a four wire ford style sensor then the additional grey wire is to be
connected to engine ground or better yet the ECU ground.
I put my grey wire on the heater ground wire. Seems to work OK for me.

Dave

Quoting Ed Kellock <ekellock at gmail.com>:

> I believe that is the signal wire.  If you have a 3-wire sensor and
> there is just the one black wire and the other two are the same color
> as each other, then the black wire is the signal.  The other two are
> the ones that cause it to heat up to operating temp.
>
> On Mon, 19 Jul 2004 14:53:14 -0400, bblake1055 at aol.com
> <bblake1055 at aol.com> wrote:
> > Does anyone know what the black wire goes to?  I was hoping it was a ground
> and I could just ground it somewhere else since I screwed the connector up.
> >
> > In a message dated 7/19/2004 11:31:28 AM Eastern Daylight Time,
> dsaad at icehouse.net writes:
> >
> > >Since you have a need to replace connectors, It would probably make sense
> (and
> > >cents) to choose a particular O2 sensor - either a 3 wire or 4 wire, then
> get
> > >the mating engine side plug and splice it into your system. Remember if
> you go
> > >with the 4 wire, you need to add a ground wire. This way you can buy off
> the
> > >shelf Ford sensors and plug them right in. This is what I have done.
> > >To get to the wires, you will probably have to remove all the air box
> stuff to
> > >gain easy access to the wire harness.
> > >
> > >Dave
> > >
> > >Quoting BBlake1055 at aol.com:
> > >
> > >> Ok now that I have totally screwed it up.  After 30 minutes of going
> back and
> > >> forth with rust blaster I got the O2 sensor out but screwed up the black
> wire
> > >> connection at the head.  What does the black wire do and can I splice
> into it
> > >> somewhere?  I broke the connector off right at the connecting block
> (didn't
> > >> realize it was a "slip on" connector.
> > >>
> > >> Now I know why I stopped working on my own cars years ago!!!!
> > >>
> > >> Also, anybody know what thread the O2 sensor is?  I need to clean the
> threads
> > >> up a little - part of the O2 sensor threads are still in the X-pipe.
> > >>
> > >> Bob Blake
> > >>
> > >> 90' V8
> > >> 91' V8 (currently on jack stands)
> > >> 92' V8
> > >> In a message dated 7/18/2004 11:44:06 AM Eastern Daylight Time,
> > >> BBlake1055 at aol.com writes:
> > >>
> > >> >I've never changed it in the 50,000 miles I've put on it so I guess
> I'll
> > >> pick one up and give it a shot.  Thanks for all the responses.
> > >> >
> > >> >Bob Blake
> > >> >
> > >> >90' V8
> > >> >91' V8
> > >> >92' V8
> > >> >
> > >> >
> > >> >In a message dated 7/18/2004 11:30:11 AM Eastern Daylight Time, "S
> Dewitt"
> > >> <sdewitt at stx.rr.com> writes:
> > >> >
> > >> >>Yes, the engine is running in warm up mode, which means a rich mixture
> to
> > >> >>get things nice and warm. The O2 sensor also needs time to warm up
> until
> > >> it
> > >> >>becomes functional..
> > >> >>
> > >> >>Scott DeWitt
> > >> >>Advanced Automotion
> > >> >>817-939-6761
> > >> >>----- Original Message -----
> > >> >>From: <BBlake1055 at aol.com>
> > >> >>To: <v8 at audifans.com>
> > >> >>Sent: Sunday, July 18, 2004 10:02 AM
> > >> >>Subject: Re: [V8] "Major Surging"
> > >> >>
> > >> >>
> > >> >>> One thing I did notice is that when the engine is cold it doesn't
> seem
> > >> to
> > >> >>have the surging problem. Would that make a difference with the O2
> > >> sensor???
> > >> >>>
> > >> >>> Bob Blake
> > >> >>>
> > >> >>> 90' V8
> > >> >>> 91' V8
> > >> >>> 92' V8
> > >> >>>
> > >> >>> In a message dated 7/17/2004 8:49:54 PM Eastern Daylight Time,
> Kneale
> > >> >>Brownson <knotnook at traverse.com> writes:
> > >> >>>
> > >> >>> >Oxygen sensor????
> > >> >>> >
> > >> >>> >At 08:19 PM 7/17/2004 -0400, BBlake1055 at aol.com wrote:
> > >> >>> >>My 91' has recently developed some major surging problems. It use
> to
> > >> be
> > >> >>> >>minimal at 3/4 throttle but now it seems to be there 95% of the
> time.
> > >> >>> >>
> > >> >>> >>I notice when the computer was in the "instant mileage" mode and
> I
> > >> held
> > >> >>it
> > >> >>> >>at a steady 65 mph the mileage would bounce back and forth from 28
> mpg
> > >> -
> > >> >>to
> > >> >>> >>21 mpg. it feels as if the fuel pump is tuning on and off. The
> overall
> > >> >>gas
> > >> >>> >>mileage is still ok.
> > >> >>> >>
> > >> >>> >>Any ideas????
> > >> >>> >
> > >> >>> >_______________________________________________
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> > >
> > >
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>