Don,

I went through this with my 88 GL and 2.1L WBX and the Digifant FI
system. Would run along fine - then start chugging and lugging - turn of
then back on allowing the ECU to reset - and it would be fine for a
little bit - then it would start again. Unplugging the O2 sensor took
care of the problem. In time - a new O2 sensor eliminated the problem
altogether.

John

On 6/24/2014 10:06 PM, Don Hanson wrote:
>   I queried "what was Vanagon Syndrome" a few days ago
>
>     This is a case where that OBD system might be helpful...one of the few
> times my Vanagon has misbehaved in a way that is not simple to deduce the
> problem and fix it.
>
>    I think my Vanagon is jealous.  I recently got a Safari Van for work.
> That has been getting a lot of my attention lately as I go over everything
> and actually drive it to work sometimes....  The Vanagon, which until now
> has been Old Dependable, is telling me..."Dude, pay attention to ME...or I
> show YOU..."  or sumpthin like that...grin.
>