Thread: DFCO question
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Old 12-04-2009, 04:34 AM   #7 (permalink)
cfg83
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Rainh2o -

Quote:
Originally Posted by Rainh2o View Post
Anyway I can find out without a scanguage or mpguino? Someplace on the web or Library? Or is there a definite sound or "feel" I would be looking for when it happens?
I am lucky because I have a digital AFR (Air/Fuel Ratio) gauge that monitors my pre-cat oxygen sensor. When DFCO happens, I *see* the AFR go lean.

Here's a site with a bunch of them (I got my digital AFR from here) :

In-Car Air-Fuel Ratio Gauge Buyers' Guide - Part One

You can also do it extra cheap. Tap into the 02 sensor wire and use a voltmeter to monitor the voltage. As you can see from the article, when the voltage gets closer to "0.0", the AFR is going lean.

Here is an example of someone installing a fancy AFR gauge :

Installing an Air Fuel Ratio Gauge

CarloSW2
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