Quote:
Originally Posted by wazzz
Karl, just curious to know if you are now running open loop or closed loop. If closed loop, since you now have a setup with two wideband sensors, which one of the O2 controllers did you plug back to the Motronic ECM? And have you tried to swap them? It is probably a stupid question, but since the Motronic only has one input for the return signal, just asking anyway.
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Gilles... Way I set dual wideband up here is to see & record O2 data using LogWorks. No controller is connected to ECU so engine is now constantly open loop in regard to O2. Early on in this expedition---in the "which way to turn..." thread that I recall you were a part of---there was input that a 3.2 does not need the closed loop provided by a connected O2 sensor for the engine to run correctly. I checked this proposal by disconnecting my O2 sensor and running a mileage test. No difference in mpg or performance with or without the O2 sensor connected. Given my 10 mpg city, perhaps this discounts the credibility of my engine's results in this regard. That said, given the credentials of those who offered this input, I doubted only because I'm an empirical monger.
I did swap the O2 sensors side-to-side in the exhaust after seeing the first trace lines... (green is 1-2-3 side / blue is 4-5-6, scale is lambda.)
Had to question if imbalance seen was a sensor or controller fault or truly the exhaust O2 levels. I also swapped the Innovate controllers. Readings did not change for each side of the engine. I concluded hardware was working correctly.
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