No, I didn't check the resistance of the coolant sensor, but I 2 have to
new ones and I put them on one after another but still not working. I will
take it out and measure it and also cleaning the bottom of the thermostat
housing too..

could you please tell me the resistance range of the sensor? I do know the
colder the coolant temp the higher the resistance and that's it.

thanks a lot

dan