> The coolant temperature warning light sometimes flashes when the gauge
> needle is showing max temp, and sometimes when the needle shows normal
> temp.

I had the same problem this last weekend, just a few days after I had
the dealer flush and fill my coolant (yeah, yeah, I know...)
Temperature gauge showed normal, right amount of coolant in refill
resevoir (couldn't see into the overflow tank), no visible leaking,
tight V-belt, etc.  

I couldn't make heads or tails of the wiring diagram in Bentley - it
looked like only a ground leading to the warning light part of the
indicator, and the temperature sensor signal *only* (ie, no coolant
level sensor) leading to the "gauge" part.

The interesting part is that the flashing indicator went away each time
I turned off the engine and restarted it.  Is it possible that an
intermittent sender signal gets "latched"?  Also, this problem seems to
have disappeared now that I'm back down at sea level from 3000' to 7000'
where it was happening.

Steve Hoge
'77 Loaf      (Da Rust Bucket)
'89 Syncro GL (Da Dust Bucket)