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Registered
Join Date: Aug 2015
Location: Cologne / Germany
Posts: 707
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Quote:
Originally Posted by Funracer
Did this today. It showed .8V, too rich. As I turned the mixture CCW towards lean it went lower .7V and then dropped instantly to .3 MILLIVOLTS! I tried to reduce it to .5V many times but it did this every time. There was no reading between .7V and .3 millivolts. This is a brand new sensor I installed back in February.
I have 2 other O2 sensors that tested good today. I will put one in tomorrow and see if it works better.
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Yes, its very difficult as you must hit the CO mixture that precise so it exactly results in the ballpark for a proper Lambda 1 reading, means 0.1-0.9v. Just a 1/16 turn already affects the mixture significantly seen with the eyes of an O2 sensor.
But I guess here your focus should be set on the ECU – just follow what mysocial911 suggested 2 posts before and let us know your readings.
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911 SC 3.0, 1982, black, US model – with own digital CPU based lambda ECU build and digital MAP based ignition control
All you need to know about the 930/16 and 930/07 Lamba based 911 SC US models:
https://nineelevenheaven.wordpress.com/english/
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