And also, since this is tuning into a tuning night,
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So I mapped out the injector pulse, and what do ya kno, it goes down! However, it's not directly proportional with the narrowband readings. The Narrowband actually first reads slightly LEAN, all while the injector pulse is going down, but then the narrowband has a bipolar moment and switches to full RICH.
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What you are probably seeing is called transient delay. The injector has to inject the fuel, the engine has to burn it, and it has to get into the exhaust system, before the narrowband can "see" it. That all takes .250-.700 milliseconds depends on the RPM where you cruise and where the sensor is. So when you are looking at those graphs, the narrowband is always slightly behind whatever the injectors are doing.
I keep looking at your graph and I dont really see anything that weird, besides the slight trend down for the duty cycle. the dip lean in the narrowband corresponds to the dip in the TPS if you notice you lift for a moment then get back on it. Seems to react pretty fast- Ill assume the engine RPM was pretty high (2500~). when it goes "full rich" thats expected considering your throttle position.
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Misfire is like a switch.
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please be more specific.
lets scenario. Your driving at constant throttle. The O2 sensor is flipping back and forth. You keep driving this way forever. Suddenly out of no where- the car acts up? For how long? If you just keep your foot there, does it start working again like normal?