At 10:00 AM 4/14/2010, Tom Jansen wrote:
>Why was the light flashing?   I have read it is due to over heat or
>air buble??   Temp was ok.   Where is temp sensor at?  pressure
>tank??  Radiator??    Oh I changed the alternator

Seems pretty likely that the battery voltage was going down and the
panel regulator couldn't keep regulating at ten volts (it needs
something like one and a half volts extra to play with).  If the
regulator output goes below 9.5 volts the light will flash.  So far
as I can think, that does not explain the needle being high.

Temp sender on the 2.1l is on the forward face of the thermostat
housing.  The one sticking out the left side is the T-II sender for the ECU.

Yours,
David