Good afternoon folks...My car randomly stalled while I'm driving and I find that after disconnecting the battery for a few minutes and restarting the car, it cranks back up and runs like nothing happened. It did this a few times on the way home and after letting the car sit overnight, the issue went away completely. This also happened last summer when it was really hot outside, but it went away after resetting the ECU. Today my CEL came on and I checked the code and it said it was my O2 sensor but I strangely enough the light went away last night and my gas mileage seems pretty normal and my engine isn't stalling. Any suggestions? I want to just replace the main relay because I think that's the culprit. Any insight would be greatly appreciated. I've got relatively new coils and NGK plugs installed last year so I doubt that's the issue since there aren't any codes being thrown for misfires.
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