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<DIV><FONT size=2>Headers might me making run lean too!</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:euro@lvcm.com" title=euro@lvcm.com>Edmond</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A href="mailto:gmecm@diy-efi.org"
title=gmecm@diy-efi.org>gmecm@diy-efi.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, November 08, 2000 9:59
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Bad oxygen sensor ?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I did several 1/4 mile runs after I installed my
Edelbrock headers and brand new o2 sensor. First and second gear are nice
smooth 900mV range ramps. Once it hits third gear is starts descending rapidly
to about 400mV and stays down until I let off the throtle. I wish I was at
home so I can show you the exact Diacom graph. I tried giving it more fuel
(almost 95 in the VE tables) between 90-100 KPA but it still does this. The
engine runs fairly well at WOT, but I cant really tune it w/out gettting some
accurate info from the sensor. My old 80K mile o2 sensor in the exhaust
manifolds didnt do this at all. Could this indicate a bad sensor ? I should
mention at idle it goes from 40-50 to 800-900 almost every 1/2 second. It does
this at light cruise too. Maybe it's time for a heated sensor ? Still downt
explain the WOT weirdness though since it should be nice and hot.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>p.s. I know Bruce already answered this on the
thirdgen.org message board, but I wanted some more opinions
:)</FONT></DIV></BLOCKQUOTE></BODY></HTML>