This does make sense. This is something that isn’t super common but this is a thing.
The ECU actually is the amp system for the coil packs and 02s. So if the battery is low the voltage amp output is low as well. You would think that when you start the car the alternator would put out a charge and fix all issues but its not the voltage output from the alternator but the actual battery voltage that dictates how things run. So if you have a low battery voltage you get reduced coil pack production output.
Very interesting. I’ve ordered the battery so I will wait and post some updates and maybe see if it may have affected the o2 sensor (that’s really going out on a limb)
Still want to pull the cats, but if I can wait a few months that would be nice. Hoping that this will help some of the other guys on here.
It should help the car overall. Not too sure about the 02s BUT they are heater code so maybe the low batt is effecting the warm up ability. But to be honest. I would think you would see more than just the one bank but… you never know.
Just be careful if the 02 completely faults out it can turn those cylinders off or put them into limp mode. It’s something good to keep an eye on.
Thought I replied on here a while ago. But new battery did the trick. No more misfires.
I’m finding in really cold weather that the air compressors are drawing too much of a load at start up and the car misfires, but once they stop I usually just turn the car off and restart and the misfires are gone. So odd, but workable.
