At 12:40 AM 2/21/2011, Gregg Carlen wrote:
>Sitting at idle for awhile, the needle will rise to the top side of
>the temp light. I turned on the radiator fan and it cooled right
>back to the center. Still have a problem with the temp warning
>flashing during startup and continuing for 10+ minutes. Possibly a
>bad temp sending unit?

Nope.  Bad gauge.  To make certain, pull the 42/43 relay on the relay
panel.  If as I firmly expect the symptom continues you have a bad
cap inside the gauge which you can fix or I can.  Pmail me.

If the symptom goes away when you pull the relay, pull the level
sender from the pressure bottle and clean the pins vigorously with
Scotch-Brite then report results.  While you're back there looking at
the pressure bottle, inspect closely for impending cracks.  I'll have
a couple pictures up shortly.

Yours,
David