Could be a problem with one of the coils. It has 4
mite be the icv (located near the rev cable) that needs cleaning i had same problem idling around 400 and sometimes cutting out a carb cleaner will clean it
check the wires, if they are crossed up you get bad ilding. my aurora was idling around 1500 rpm's, but after having all the spark plugs and boots replaced it went back to around 600...see if that helps
A car that is stopped with the engine running.
As the vehicle sits idling the driveshaft is not rotating.
Yes, "sparkling plugs" is definitely detrimental to idling or smooth running of an engine
There are many reasons why your car might vibrate while it is idling. It could be running too hard for example.
Yes, when idling and driving.
Probably wheel bearings or wheels are unbalanced
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.
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.
Car emissions can be reduced by reducing idling time and by driving at a moderate highway speed when possible. Driving too fast and idling are both wasteful in terms of fuel, and increase the vehicle's emissions.
It's a 1997 Tahoe