Hello, I have been scouring for information on this and haven't been able to find the problem with my idle and throttle.
I have a 2011 M37X,
I recently (3 months ago) changed my spark plugs (so you have more info). Everything has worked fine. If anything, the car was peppier.
As of a week ago, the engine will idle fine, then miss. Then idle fine, then miss. It only does it every once in a while, but it is noticeable.
At first, I thought it may be bad gas. But I burned the gas tank down to almost zero and refueled it. Still getting the same problem.
Also, It is not happening just at idle, as I am accelerating, say up a hill, sometimes I can feel that miss. However, I can nail the throttle and down not feel it at all.
Any ideas?