I drove mine today, it was fine while the battery had over 9 or 10 volts, but once the battery died, the car (4WD, mitsu challenger) started driving poorly, and then stopped when I pulled over. Not sure if I did any damage yet.
If it is a SI (Spark ignition) engine then you can drive so long as the battery has sufficient charge. A CI (Compression ignition) engine does not rely on an electrical ignition and will drive without the alternator or battery.
The alternator of a car is responsible for charging the car battery. Someone who repairs a broken alternator ensures that the alternator works again and continues to keep the car battery charged.
If an idler pulley is broken, I would advise not to drive it anywhere. It would effect the power steering, water pump, alternator and coolant fan causing you to get stuck on the road and possibly cost many more $$ in damage.
NO
If it's broken it will not steer.
Defective alternator or broken alternator belt.
no
Either your battery is dead and wont accept a charge or your alternator has stopped charging the battery due to a blown fuse, loose or damaged wiring, loose or broken drive belt or the alternator itself has gone bad.
Possible reasons your car's alternator is not charging: Drive belt loose or missing Alternator has failed
with the rest of the car
your car is broken
You have an electrical fault in the alternator. Don't drive the car, get this fixed, or you risk a fire.
NO, not safe to do so