[Jdfromga]

My 2016 M6 SS started doing some really random revs about a month ago.


I haven't done anything changes to the car in months, but it does have FBO, E85 and tune.


I will be driving normally, and when I engage the clutch coming to a red light, or slowing down, suddenly the revs ramp up any where from 1500 to 2500 rpms and just hold there or jump around randomly and finally settle down. If I bump the throttle, that will usually break the high idle but not always.



I took the throttle body off and cleaned it, thinking maybe it was getting gummed up, but that did nothing to help. And I don't get any codes on a scan.


Anybody know what else I could check to try to correct this?

[SSDan]

I had something similar on my gen 5 cam/bolt on Camaro. It was caused by a vacuum leak with the oil catch can. So maybe check for a vacuum leak. Good luck and keep us posted.