Either a short to power or a bad fan switch.
Putting the lights on, listening to the radio or anything else that is plugged into the car.
Disconnect the battery.
If the engine is running, then no. The alternator constantly keeps the battery charged.
When replacing battery, when servicing some part of the engine, or when the vehicle is not going to be started for over one month.(keeps the radio memory from draining battery)
Battery has a dead cell, need to replace battery
Because the alternator keeps the battery charged when the car is running.
If the car won't start, jump it off. While it is running, remove the positive cable from the battery. If the car dies, then your alternator is bad. If it keeps running then you may have a bad battery.
Could be a faulty thermostat switch in the radiator !!
Probably, with that age of car, it's a wrecked battery. The only last 4-5 years, on average.
Your battery is going bad and something may be draining the battery. If you have a weak battery, it will lose charge. The car charges your battery when you run it and if you dont run it, it will go dead. If your car dies while running, in that case you might need a new alternator.
Possibly a bad alternator. The Alternator charges the battery when the vehicle is running. If the battery is not being charged this could cause the vehicle not to start.
on a 1990 cadallic sedan de ville after you cut the car off the blower keeps running killing the battery