Another thing I want to add. I suspect part or the greater part of the problem is power (electrical).
Every time when the car is barely turned or several minutes later the car idles and I can rev easily without the idle dropping on its face or I can put in reverse without it dropping on it's face. but as soon as the car warms up a little more I notice my battery voltage gauge drops down past the midway point almost to the red part.
Ive noticed when this is the case this is when the idle goes nuts on me. This is just a theory, but I will try to replace the alternator with higher amp rated unit. MY battery is currently relocated to the back of the trunk, so my old alternator which hasnt been replaced in 120 000 miles might be having issues getting power to charge the battery and having the vehicle electrical's run at the same time.
Any opinions on this?