Just to update:
My occasional hesitation problem appears to be fixed.  It hasn't reappeared
since changing my o2 sensor before memorial day weekend.  The previous
sensor was relatively new(~4000 miles), but I think the wiring was iffy:
possibly I damaged the white boot while removing that pipe during the head
job?  I'm also getting an extra 1-2 mpg over what I was for the past 4000
miles, so maybe the sensor had problems all along.  I'll need to go through
more tanks before deciding whether this increase is "real" or not.

-Wes

On Wed, May 21, 2008 at 5:32 PM, pickle vanagon <greenvanagon@gmail.com>
wrote:

> I had some slight hesitation symptoms again yesterday, during a very wet
> day with lots of rain.  I'm guessing this is just a silly electrical
> problem.  Time to start wrapping everything in electrical tape?
>
> I figure my situation can't be too bad, though, because when I filled up
> the tank yesterday evening, I found out I've been getting 20mpg driving
> around town.
>
> -Wes
>