John

My '84 did the same thing (as did my friends 85), it turned out to be air in
the cooling system... Bleed it carefully and hope it isn't a leaky head.

The temp sensor doesn't usually go erratic like you describe, though sometimes
the connection gets alittle flaky. Try wiggling/rotating the connector a few
times. Alittle spray on contact cleaner won't hurt either.

Erik Valeur
84 Weekender