Not sure if this is the right section for this, but I've been trying to track down the cause of a very rare intermittent problem. Sometimes on key-on the fan will turn on, and I finally was able to try and get a log and the computer is not communicating when in this state. If I try and run it, it will usually start with some trouble and then either stall or almost stall, usually with a solid SES light that does not store any codes. Based on this, I imagine the computer is sometimes not starting up properly, but I can't think of what would cause it. It was rainy and cold today, and it hasn't really happened in the past few months of dry heat so it may be related (or could just be coincidence). It has certainly happened when it was not rainy outside. This is a 350 TPI with the 730 ECM.