Can a header collector leak make the o2 readings innacurate?

[Len Sabatine]

At 07:51 PM 6/12/00 -0500, you wrote:
> > Date: Sun, 11 Jun 2000 18:34:37 -0400
> > From: Len Sabatine <sabatine at epix.net>
> > Subject: Re: Can a header collector leak make the o2
>readings innacurate?
> >
> > At 05:05 PM 6/11/00 -0400, you wrote:
> > >i have a few exhaust leaks including one or two at the
>collectors, can this
> > >screw up o2 readings somehow?
> > >
> > >
> > >Pablo
> >       If the O2 is "reading" the additional oxygen in the
>exh sys , it is
> > very possible
> > the ECM will correct for this condition.
>
>You'll have to explain to me how the ECM can correct
>for this. As I see it, the ECM will see o2 and increase
>the fuel. Still seeing o2.  Hmm, more fuel. Hmmm still
>o2. PIG RICH! Hmmm o2 sensor must be bad, set code,
>LIMP IN!
>
>Doesn't seem to be much of a correction.
>
> >Best Advise, fix the Leaks, then
> > you know
> > they aren't a problem.
>
>Now that makes sense.
>
>Gerald Pelnar
>wd0fyf at mpks.net
>McPherson, KS

    Psst ; ECM making a correction for Extra Oxygen in Exhaust System,
Meaning: ECM will ADD MORE FUEL.  OK? Remember the Exhaust
pulsations are traveling in both directions, so Exhaust Leaks with O2
sensors are a no , no .

Len

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