Sounds like Carb problems. I have a 1997 GSX 750F. Mine did the same thing until I fixed the bugs out of the carbs.
or you may just need to adust the card with the adjust screw on the carb
There are many reasons why your car might vibrate while it is idling. It could be running too hard for example.
Effectively all the fuel that it burns while idling. You are getting 0 miles per gallon while idling.
There are several things that can cause your Jeep to stall while idling. The timing may be off or your fuel filter may be clogged.
If the car dies while idling, the timing might be off. Other causes can include a clogged fuel filter or a bad spark plug.
2001 sienna stall while just stop while driving. electric just cut out power, then switch can operated but idling roughling
There can be many reasons why a car surges while idling. Some of these reasons are the computer could be dying, or the fuel injector are giving the engine too much gas.
Trans fluid is always checked with car level and idling while warmed up.
it could be your timing is off
Check the fan control
Is the AC turned on?
You can adjust the idle air control valve on a 1992 1500 truck while it is just idling. This is done if the truck is idling too fast or too slow. It will help the truck run better.
The spark plug gap can cause the RPMs to fluctuate, while idling. The more probable cause of the fluctuating RPMs is a bad camshaft.