This problem first began with my temp gauge pegged on zero.  Then the little
red light began flashing maybe 20 times rapidly with about a 30-second gap
before the next sequence of flashings began.  Eventually, the gauge began to
indicate with the flashing steady blinking and reading eventually above the
center of the gauge.  I checked the coolant level and it is OK.  The thing
runs fine and there is no indication that it is overheating.  The heater
works fine.  Nothing is dripping underneath.  There is no antifreeze smell.
This is an 82 Westy with a 1.9 TD.  Anyone give me some help on this?