You guys need to invest in a Davis CarChip. Plugs into your OBDII port and records multipe data points from your vehicle. There are several versions with different recording capacities. I think mine was something like $180 and records 300 hours of data, plus any OBDII codes. This way you can leave it in all the time and pull it after you have several "incidents" to see if they all have something in common in the data.