I was experiencing, again, random flashing of the warning light and wild
swings of the needle. Stopped in at the garage to see if my mechanic had
any ideas. He noticed that the harness to the Temp II sensor was:

 

a)          put on upside down ( I didn't think that was possible with
most connections) and

b)        loose, because the blue plastic housing was broken and the
wire bail missing.

 

He strapped it on tight with a tie-down.  Seems to have solved the
problem temporarily, but I have only driven a couple of blocks since.

 

Stay tuned ...

 

Woody

83.5 V'gon

Haverhill, MA

 

PS I have a spare plug with housing intact, but no bail. Maybe I'll try
a replacement.