I had a coil go bad on me around 65K on my '99 and since I have the extended warranty it was covered so I had them all replaced.
My question is: my co-worker has a '99 Se also and his check engine light came on. They diagnosed the problem, at the dealer, to be an ignition coil but they said they didn't know which one it was. Is there a code for each individual coil and would that code tell you which it is?

Where would be the best and cheapest place to buy one? I know changing them is a breeze and resetting the code isn't hard too. I'm just trying to help my co-worker out a little and save him a few bucks. Thanks.

 

I dunno, but I would start by running an ECU self test or OBD2, maybe it will blow an additional code telling you which cylinder. If an ignition coil went out, I imagine there would be multiple codes.