Probably due to old/worn-out engine mounts, bushes and that kind of thing. If these are OK, you need to get the engine checked.
Hyundai accent idle speed
car run good but has a little vibration idle or running
If you have average mileage on it, you should go get it checked. That is too low for an idle. The vibration is probly from the low idle.
Hyundai Accent was created in 1994.
Idle Eyes ended in 1994.
it seems there a small screw back of the intake but the idle is control by the ecu.
most likely you have a missfire.
spark plugs and wires
it cant do that because no one can stop a vibration only the earth could
Because the engine is running. Shut it off or give it gas and it will not idle.
One reason why your 1994 Nissan Altima could be sputtering at an idle is because of your spark plugs. It could also be caused by the idle sensor.
How do yu adjust idle in a nissan sentra