Jeff Lincoln wrote:
> it was esentially over cooling (so I've been told) could that contribute to
> some of the poor running I was having as well? (kinda Vanagon syndrome type
> symptoms). I only ask because it ran perfectly on my test drive after doing
> the work.

Yes indeed, Jeff.  When the thermostat was bad on my '85 (overcooling) I
had to block off most of the radiator with cardboard just so the engine
would run right.  Of course, after replacing the thermostat, it ran
great again.

Not only will a stuck open thermostat cause poor running, it will cause
increased wear.  Cooler is not better ... below normal operating
temperature that is.

Mike