7A Coolant Temp Sensor
 

does anyone have any idea why the old faulty sensor from my 20v engine has four contacts and the replacement one only three? the car runs to perfection now that the new one has been fitted and the temp gauge works as it should, however, the fan still hasn't cut in by this point and i'm a little concerned > >

http://i18.photobucket.com/albums/b1...hoto1719-1.jpg

http://i18.photobucket.com/albums/b1.../Photo1756.jpg

and the new one . .

http://homepage.internet.lu/customau...S2.htm#COOLING

:confused:

s'ok - i'm told that the 4th pin is a dead one and that the fan switch is in the radiator.

ignore me!

(and no heckling from the back row!!)

:o