Is that something that could easily go out, and something you could pick up fairly quickly as the cause of the problem if you popped the hood and knew your way round a car? Are coils specific to makes and models, or easily interchangeable - just want to be sure I get my facts right with my writing.
I vaguely think I had a problem with a coil once years ago, now that you mention it, but it was so long ago I can't remember the circumstances.
Thanks.