Hi
Not sure on volts readings

Goin by tests in the cosworth tech manual you measure the resistance across the sensor in ohms,my m8 has got my tech manual at the minute so can't tell you the figures sorry

But can remember the resistance should go down as the engine/coolant warms up

Just remembered about this :

http://www.cosworth.hu/content/haszn...uickchecks.htm

Print it off,very useful