Just wondering in a 4AFE or 4AGE is there both a temp sensor/sender
for the temp gauge and another sensor for the ECU to adjust fuel injection duration etc or do they both run off the one sensor. In the Haynes manual it speaks of the gauge sending unit located in cylinder head but doesn't mention the one that gives signal to ECU.
I also realise there is a switch for the thermo fan that is seperate to all this.