Oil temp sensor?

[M]

I drive a 1990 Gti 16v.  My oil temp display is reading - --.  All the other readings seem to be okay.  Does the oil temperature sensor need replacing?  If so where abouts is this located and how much is a new one likely to cost?
Many thanks.
M

[old_boy]

Hello m
I recently bought a mk2 16v with the same prob.
look behind on the back of the head behind the dizzy and you will see a brass sender and probably a wire swaying around (cant remember what colour but can get back to you) connect it back up like i did and hey presto0oil temp readings

[M]

I think I've found the brass sender bolted to the back of the head behind the distributer.  There is no wire attached but has what looks like a small disk on the end.  There is also a green wire that has been cut emerging from other wires just behind the distributor.  Would be greatfull if you could let me know the colour of your wire.
M

[old_boy]

Hello M,
The wire you need to connect up is green and black striped-I'll send you a picture of mine via E-mail (excuse the oil!) hope this helps.

[M]

It sounds like the one that's been cut.  I look forwards to receiving your photo.
Thanks in advance.
M