yes its a law
Exhaust fumes may enter and that is not good.
yes. because your heart is pumping faster
No. Lower the load to the floor, set the parking brake, turn off the engine.
It is generally not illegal to leave your car running while you quickly run into a store, but it is discouraged for safety and environmental reasons. Leaving your car unattended with the engine running can make it an easy target for theft, and it also contributes to unnecessary air pollution. It is best to turn off your engine and take your keys with you whenever you leave your vehicle.
I think so; a fire could be started if you ran your car while pumping gas, so it's just common sense not to do it. many newer vehicles have a fuel tank pressure sensor that will trip the check engine light if the gas cap is loose, leaking, or removed while the engine is running
It can. You should leave the engine running while you add water to the radiator. If you add water with the engine turned off, but while the engine is overheated, you might damage the engine or the radiator.
No but, if you leave a plug wire disconnected and not grounded while running the engine, you can damage the ignition module.
Diesels are kept running while parked for various reasons. In cold weather, a diesel may be very difficult to start so it is better to leave it running. Maybe the engine is needed to run heat or A/C for the sleeper cab.
If the engine is running and the alternator is good. If the engine is not running, no.
No , just when the engine is running
Get engine running. While the engine is running disconect the POSITIVE termninal from the battery. If the engine dies, the Alterntor is bad.