At 12:18 PM 4/19/2010, Don Hanson wrote:
>   My temp gauge usually reads on or just slightly above the second of the
>bottom two marks...below that  LED.  Yesterday I was seeing the needle just
>above the bottom of those two lines, even when climbing to ~5000'...until I

<snip>

>move, over a 10-20min period from quite cool to where it normally has run
>and maybe fall again...So my gauge is showing 'system running very slightly
>cooler than normal'

Don, the gauge is reading so low that it's hard to know what it means
in terms of temperature difference.  Meters and gauges are much less
accurate below about 1/3 of full scale.  I suspect the engine sender
has different specs than the WBX sender.  To check the gauge itself
and the wiring, disconnect the sender and substitute 265 (100/100/68,
5% half or quarter watt)  ohms to read right on that second line that
shows the upper bound of the "transition zone" and 35 ohms (10/10/15)
to read at the line beginning the overheat zone with the light
blinking.  The gauge takes a couple minutes to stabilize, especially
at the bottom.

Yours,
David