I'm still searching for ideas to fix my '80 Vanagon. The head temp sender
fell out of the head. The threads inside the head have stripped. I've got a
couple of ideas on how to fix this, but I need to know more about how this
system works. I can find no mention of it in my Bentley manual. 

Does this thing need to conduct electricity? Does it provide a ground? Is it
a simple on or off situation, or does it decrease or increase in resistance
as it warms up? What are the temps to be expected on a normally operating 2
liter head? 

My thought is to squirt some of that loctite thread repair stuff in the
hole, and screw the thing in. If it needs to conduct electricity, I'll put a
spade lug around the bottom and ground it out. If it doesn't need to conduct
electricity, and just needs heat, I won't have to use the spade lug. 

This loctite stuff says it's good up to around 300 degrees. Is this enough,
or will it get hotter than that.  I can't find another place to put this
sender where it will work. My wife told me where I could put it, but I don't
see how that can possibly help this situation :-)

Anyone had these problems? Anyone know how this thing works, or knows how to
fix it?
Jim Kirk
captain@iquest.net