When is a heated 02 sensor necessary ?

[Edmond]

My Diacom scans show the 02 steadily DEcreases to about 300-400 MV at WOT.
LOL  It's nice and steady at 800-900MV in first and second but you start
winding up in 3rd it starts a pretty steep descent to about 300mV. Strange
eh ? Maybe I need more fuel at higher RPMs.


----- Original Message -----
From: <timsiford at hushmail.com>
To: <gmecm at diy-efi.org>
Sent: Wednesday, November 01, 2000 1:49 PM
Subject: Re: When is a heated 02 sensor necessary ?


> Blade,
>
> The O2 *should* be swinging back and forth at idle.  At WOT it should be
> fairly steady in the upper mV region.  I have had the SLP headers
installed
> on my car for some time and am running the stock O2 sensor (actually a
bosch
> one wire O2 sensor) with zero problems.
>
> Tim
>
>
> At Wed, 1 Nov 2000 12:47:33 -0800, "Edmond" <euro at lvcm.com> wrote:
>
> >
> >
> >Hey guys. I just wanted to ask this question to get some opinions. It
> >=
> >looks like I might have to get one. I installed Edelbrock headers on
> >my =
> >L98 engine and the brand new 02 sensor I put in, swings from like 54mV
> >=
> >to almost 900mV at idle. I even got a "low 02" error code once from
> >the =
> >ECM. Would a heated 02 sensor help alleviate this ? Is one necessary
> >=
> >when putting headers on ?
> >
> >
> >
> >

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