DIY-WB... It's alive...

[John Dammeyer]

I have a question about O2 sensors in general.  On a fuel injection
setup where the ignition has a bad miss or even fails for a 1/4 second
while injection continues,  will the O2 sensor go rich because the fuel
isn't being burnt or lean because the O2 is still in the mixture.

That then begs the question.  If the Stochimetric condition is when all
the O2 used to burn all the fuel,  how can it ever show a rich
condition?

Regards,

John Dammeyer

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org] On
Behalf Of Mark S. Riley
Sent: Sunday, September 02, 2001 1:11 PM
To: GM-ECM List; diy-efi list
Subject: DIY-WB... It's alive...


Got the board finished and mounted in the box to the lid like Bob R did.
Put the terminal strip on the top side of the lid. Got everything hooked
up and it heated but voltage stayed at 2.48 volt. Took it back apart and
I put the led in backwards and had one of the leads on capacitor C7
touching the trace crossing under it. Not quite the way it's supposed to
be. Repaired those goofs and it works!! Clean air voltage is 3.98 and
sticking it in the end of the tail pipe on my Escort shows voltages down
to 2.2 volt just patting the gas pedal. Now have to put a bung in front
of the cat to get more accurate part throttle readings. Am going to make
a two bung pipe kinda like Bruce's so I can check it against Horiba
driving around. Later, Mark

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