low washer fluid sensor- '87 5ktq

[barry at moonbeast.com]

Okay, I hate it when a recently fixed item on my car mysteriously un-fixes 
itself.

My "low washer fluid" light was coming on every time I started the car, and 
would remain on all the time regardless of the amount of fluid in the tank.  
Needless to say, this is irritating.  Cleaning the electrical contacts didn't 
help.

So, I pulled a tank with sensor and pump attached out of a junker at the local 
yard.  The light goes out after I replace the tank, and all is hunky-dory.  
Administered the recommended number of pats to my own back.

One month later or thereabouts, that damn light is back on.  Is it common for 
the sensors to go out in these tanks?  Do I have some kind of other electrical 
problem perhaps, or was I just unlucky in picking up another sensor that was 
about to die?  Can the sensors be cleaned, or do I have to head back to the 
scrapyard?  Is the better solution to disable the sensor by replacing it with a 
resistor or something and be done with it?

Thanks mucho-
BB

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