Have you had problems with your coils going bad?

[CTScott]

Originally Posted by grampi

First off, it wasn't plugs as I put new ones in last weekend...secondly, my mechanic wouldn't screw me...I've been using him for years and he's never screwed me yet...and I know these coils go bad from time to time, my wife's MPV had one go bad a while back...I've just never seen more than one at a time go bad before...oh, and it's an '09 with 168K miles...

More than one failing would make me suspect something else causing that to happen. Incorrect spark plugs would be my first suspect and over-voltage due to a faulty voltage regulator (within the alternator) would be my second.