TJ Won’t Jump
2001 TJ. Left the headlights on overnight and the battery is dead. Hooked it up to jump. Struggled for a second or two but then fired up. While sitting in the cab, there was this really scary sounding rattle so I shut the engine off. Turns out it was just the fan hitting the jumper cable (I think). Tried to jump it again and now nothing. Sitting with the donor car running for 10+ minutes and not a peep from the Jeep.
Any ideas? Thanks!