I probably did not tittled that correctly, but I would like someone smarter than I clarify the the difference between aN "Open Loop and a Close loop" as it relates to the O2. I am having a senior moment here, some help is appreciated. thank you.
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I probably did not tittled that correctly, but I would like someone smarter than I clarify the the difference between aN "Open Loop and a Close loop" as it relates to the O2. I am having a senior moment here, some help is appreciated. thank you.
OPEN LOOP - this is the mode your ECU is in until the coolant temperature and a couple other sensors get to operating values. This is also true when you are at WOT or when throwing codes/ CEL's
CLOSED LOOP - the ecu uses information primarily from the Oxygen Sensor and adjusts fuel delivery and timing to achieve minimum emmisions, better gas mileage and power.
Thank you. I went back and re-read some data, you verified my initial conclusion from my notes from way back except my notes was simplified to: Warm Up and Oporational Temp.