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Need some input, car keeps dying on me, throwing bunch of codes. Once it dies, it doesnt start back on. I know my battery is bad, but why is it stalling while it is idle? I hooked up a battery jumper onto my car and drove like that for 1 mile to get home safely, but once the battery jumper is disconnected, car dies.. do you guys think a bad battery would cause a car to stall at idle? or its my alternator?

Thank you!