Engines use 0 gasoline until they are started.
Yes, as long as the engine is running, so is the alternator. The alternator is actually what keeps the car battery charged.
Take it to qualified mechanic for a diagnostic
Engine miss.
Your car will idle high until the engine begins to warm. You could set the idle to be a bit lower, but that may cause the engine to stall out when it's cold out. The engine should begin to lower the RPMs when it is warmed up.
Park and neutral
starter
Put the engine into high RPM in neutral or park.
The Tranny enables the car to stand still because it controls the movement of the engine. In the USA most cars are automatic so when you put your car on "P" it locks the tranny, if your engine is on and you have it on Park then your standing
when you take the car out of drive and put in park the drive mechanism or transmission does not put as much load on the engine so it runs faster.
usually a race car engine has more horse power and more ft./lbs. of torque than your standard v8,v6,4cylinder car/truck engine
start the engine and press the gas pedal while it is in park
malfunction? Did you turn the car off?