Misfiring.

[Asphalt]

Originally Posted by Asphalt

So as I got into my car yesterday I was scrolling through the dash information and my oil life is showing 6%. Normally this wouldn't be a concern, however, I has only been 2000 miles since my last full synthetic oil change. Before you ask, YES the oil life gauge was reset after service. So the question remains, what could cause it to read 6% from 100% after only 2000 miles. I'd also like to add, it's also only reading 13.4 mpg. Ideas?

Posted above is my previous about the oil life. To add to the problem, the car started misfiring. It is currently at the dealership. Has been for two days. I talked to them this evening and although they observed it misfiring in person the first day, now they can't get it to misfire at all. They, as well as I, haven't found a solution. So, at the dealership it sits.... Coils maybe?

[Asphalt]

After the car has warmed up, while it idles, sometimes it will drop under 500 RPMs and shudder as if it's going to die.