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for a while my car's been running just barely lean enough to turn my plugs white, now recently i decided to pull my O2 sensor just to see how the car would act under a "closed-loop" setting, and it started running better, etc. so now i ask why would my car be running THAT lean, and is it possible the O2 sensor was just bad?
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1984 2+2 Conv. to Turbo
Stock Motor w/T3 @ 9.5 psi of boost, raised fuel pressure 7 psi over stock, a tiny bit of timing advancement on the distributor and shorty intake and exhaust.
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wouldnt you mean open-loop? to my understanding the ECU uses the CTS and the O2 sensors to enter closed-loop operation..Morgenstern wrote: for a while my car's been running just barely lean enough to turn my plugs white, now recently i decided to pull my O2 sensor just to see how the car would act under a "closed-loop" setting, and it started running better, etc. so now i ask why would my car be running THAT lean, and is it possible the O2 sensor was just bad?
if an O2 goes bad the ECU just estimates what steps to take to acheive stoich levels, so what you are doing is a band-aid to your lean condition, but not a solution. Running like that could now foul your plugs if the conditions are right.
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