try it this way with ignition on or engine running. Coolant temp. sensor voltage On Pin 29 and Pin 11
3 to 1 volt Indicated value is for engine temperature 20 to 50c,
for engine temp. of 50 to 80c voltage should be 1 to 0.3 volt.
a faulty ect sensor will generally cause lots of black smoke and rich running when the engine is warm as they normally fail giving an engine cold signal to the ecu.as far as i,m aware there is a tie up between the charge temp sensor and the blue water temp sensor but only if one or the other fails. in this case the ecu uses the others temp to take the place of the failed sensor and it all depends on the sensor temps.
when is your misfire happening and under what conditions