It could be need of a tune up or a gas filter.
Yes if it is stuck open.
It would start and run but only idle. It would not be drivable.
No, that has nothing to do with idle speed.
no it can not.
The most probable cause would be the idle control on the engine. When you put a car in gear, there is a "load" put on it (the transmission is using power) and the idle speed normally drops. The idle could be dropping to the point where it becomes unstable and causes the engine to vibrate.
Your idle air control valve should not affect your acceleration. As soon as you step on the gas , the idle part of your engine should not be operating. If your car cuts out or stumbles, i would suspect a problem with the TPS ( throttle position sensor.)
you need to replace your belts. Take it to AutoZone to have them look at it
Loud idle? no, not turn over ,yes
A bad fuel pressure regulator will cause the car to stall or not run .
I had the same from, this especially can happen with fuel injected cars. Some main things you want to check is the timing belt if its off setting or mot, or maybe your fuel filter or fuel pump. These could be some of the problems that cause your car to idle.
Not likely but possible.
NO... You have other problems. Sounds like WATER is in the fuel.