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Thanks again all.
Dave, I did quite a bit of online research on the single wire narrow band sensor that I have (as well as an examination of the recently removed one) and the conclusion seems to be that there is NO shielding on the wire leading from the sensor to the connector. The lead from the connector to the ECU is another story. Thanks for the verification of the voltage check at the ECU pin-out.
Paul, I am happy to hear that the slightly oscillating idle at warm is an indication of a functioning closed loop. I kept thinking that it was a symptom of "hunting" and therefore an indication of a poor mixture or other problem. Also, the analog dwell meter seems like a cheap investment and I will look around. Thanks .
In the meantime, after repairing the 02 connector (as shown), and leaning out the mixture screw by around 1/4 turn, I brought it to full warm and retested the FV duty cycle % and now it does in fact "dither" steadily between 65% - 75% at idle.
The car actually starts, warms up, runs on the road and warm starts very well at this point. It runs better than it ever has since the rebuild and installation, and while I am tempted to leave well enough alone, I want to get my warm control pressure up to spec (another .6 bar) and see what happens .... Also, I want to determine whether adding an additional enrichment function (vacuum enrichment is part of the digital wur and was not included in the stock wur) to the stock throttle enrichment switch, is at all beneficial or in fact detrimental to engine performance. At that time, I will decide whether it makes more sense to disconnect the switch or the vacuum advance and just run with one of them. Any thoughts here ?
A million thanks,
Bill
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