I have a 2002 Honda Odyssey EX, non-modified. Recently it has been having an issue where it just won't accelerate, especially going uphill. I have run SeaFoam through it to make sure it wasn't clogged up but it hasn't caused any change.

The check engine light has not come on during these episodes.

My ODB2 unit shows no issues in the maintenance check section (although, to be honest, I am still learning how to read the gauges so I can't tell if it's a vacuum issue).

The problem fixes itself with an ECU clear. It will drive great for a couple days, then the problem returns.

I'm currently on vacation in a rural part of Virginia, so any clues as to what I can do out here to get home (5 hour drive, supposed to be at least, coming up soon) and back to my mechanic would be great.