[internetautomart]

which sensor did you replace?
the sender or the sensor itself? They are both right next to one another.

Don't think what might be good, test.
the circuit itself is fairly simple, sensor goes to computer, computer goes to relay, relay goes to fans.

 

[internetautomart]

the fans should go on if you unplug the coolant temp sensor.
Get a test light and check for voltage up and down the circuit.