Is it a Temperature Switch or Sensor??

1999 3.9 V8 Discovery 1

Hi coolant temperature thingy - its on the on on the thermostat housing in the big brass hex with 2 terminals coming out.

My literature refers to this as both a temperature sensor AND a temperature switch - the first would imply a variable resistance and the second an on/off action. It currently reads open circuit i.e. infinite ohms. if it is a sensor then this indicated it is broken and could be the cause of my 10mpg!!

I live in Bulgaria and the Landi dealer wants 50quid to tell me if it is broken or not before he charged me another 50quid for a new one!!!

Can anyone help??

air con fan switch,temp sensor for efi is on rh front inlet manifold when looking into bonnet

jamesmartin said:

air con fan switch,temp sensor for efi is on rh front inlet manifold when looking into bonnet

Click to expand...

Thank you!!

NOT that thats broken then........