why is the idle rough after warn up in park and in gear?

Hello, multiple possible causes -- if it's even a problem at all. Engine and transmission mounts may be worn or broken. Engine ignition system components need serviced - wires or spark plugs. Engine valve adjustment needed - should be done at the very least every 100,000 miles...better more frequently. www.repairpal.com/repair-shops Seek guidance at a shop near you.