I drive a 99 Acura CL 2.3L and I was having the same problem as described in the first post. While driving, the car would just randomly shut off. I could be going 70 mph down the highway and it would just turn off. It would stop while sitting at a stop light, driving 25 mph, etc., basically with no warning or pattern. After attempting to start it again 6-7 times, it would finally start back up. I would still have electrical power to the radio and other accessories, but things like turn signal, headlights, etc., would lose power (basically anything in the dash board). The problem used to occur every once in a while, like once a week, etc. But it progressively got worse, to the point where I couldn't even drive one mile before it would shut off. I would then have to pull over, try to start it again after 6-7 times, it would start back up, drive less than another mile down the road and it would do the same thing. After reading this thread, I decided to try replacing the main relay (reading the DIY thread). This cost $85 and DID NOT fix the problem. I then took the car to an import specialist, and they quickly told me that it is likely the ignition switch, as it is a common problems with accords (and a CL has the same engine). I read other suggestions about replacing the ignition switch, and that made less sense to me. If the car would not start up AT ALL, then I would think that it is a problem with the ignition switch. But as it turns out, the ignition switch actually relays power from the engine back to the vehicle. After hearing this good news from the import guys, it got even better, they explained that the ignition switch was covered as Acura did a recall on the part. The next day I took it to the Acura dealership, they replaced the part for free, and now it is running smoothly without any problems. Just wanted to give everyone a heads up in case they run into the same sort of problem, and take the time to thank you all for the suggestions as well!