I have the problem with rmp my 3.2 on idle.
After driving, fast or slow when i stop, rpm ~1000-1100, stay may be 30secs and down to idle rpm. Ago i see this rarely, now every stop on traffic light.
i am change:
1. Spark plug
4.Ignition coil change with service action
5. Oxygen sensors
6. Timing chain and tensioners
7. Check many sensors.
Where my problem?