I have an intermittent ping 3100-3300 rpm in closed loop after warm up. I am an aircraft mechanic & if I had a garage I could diagnose this. Need the best or dealers best. It is either something simple like something was left unplugged or cam/crank sensor or major. This 05 only has 17k miles. Been doing it since 14,700 after infinity dealer failed to bleed coolant system of air.

 

That really narrows it down lol.

Are there any codes?