At 00:01 7/12/00 -0500, you wrote:
>From:    Bill Davidson <wdavidson@THEGRID.NET>
>Subject: Re: Expansion Tank Sensor
>
>  It's a coolant level sensor. It causes the LED to blink when the =
>coolant drops below a certain level.=20
>
>  It will also blink if you don't have enough coolant in the =
>coolant/water mix.
>
>  And they typically fail such that they won't blink at all if the thing =
>cracks allowing coolant up inside the plug where the contacts are.... or =
>sometimes it fails such that the light blinks all the time...

 ...and,if they crack,allowing coolant up inside the contacts it can
 also start leaking out the top of the sensor plug,making a pool of
 coolant (or at least the evidence of where it's been) in that little
 depression around the plug.

 FYI,
 Steve O.
 Blue Mountains NSW Aust.
 '92 Transporter WBX Kombi
 '76 Transporter Double Cab
 '68 Beetle
 '00 Transporter 5Cyl Double Cab (work truck)
 '48 Fairmont M19 Speeder