I sat in my car in the driveway with the car idling, waiting for the kids to come out.
water in the fuel can cause an idling motor to sputter and/or die.
As long as your car engine is running, it should be OK. An exhausted battery will only become a problem when you try to start the car.
The same on a car equipped with manual transmission. On an automatic equipped car it will use less idling.
Idling too low or a bad lock-up torque converter solenoid.
Idling is what your car is doing when it is just sitting somewhere running. As soon as you press on the gas it is no longer idling. Your idle speed is the number of RPMs your engine runs at when you are idling.
It depends on how long you are idling, or how fast you are going. If you know you are going to be idling for a long time, it's best just to put your car in park.
throttle body is not letting enough air in. Idle speed servo, stuck or failed.
If a car shakes and loses power when idling it can be the spark plug. If a spark plug is fouling, it can cause power losses.
moving
by the idling air control valve
A car that is stopped with the engine running.