So, i got this bucket from my mother in law, and it has some serious issues, like clutch it messed, and stuff, but radiator fan first...
I found out radiator fan wasnt kickin in, and also temp gauge wasnt working.


So what i did now:
-Flushed the whole coolant system(took thermostat off, put radiator cleaner in, and drove like 500km), first coolant was freshgreen but after driving it was black-yellow, so i flushed it with hose and its good now.

-new 88c thermostat in.

-changed the first temp sensor, that in the hose of heater, it was in with 22mm allenkey, and connector was green, now there is only sensor local parts store found that is 19mm allenkey, and blue connector(now temp gauge shows something, but it wants to overheat only very slighlty over center of NORMAL mark, ifi drive normally its on like on 1/4 of the NORMAL line)

-i checked every cable from fuseboxes to radiatorfan, and radiator fan relay, they are good, also radiator fan works if i put straight power to it.

-now i ordered that second watertemp sensor that is under that heater inlet, or outlet pipe, in head.

So let me know is there any other watertemp sensors, and what every one of them does? i know that ecu kicks the fan in when needed, but it wont, so what sensor it reads for fan? thanks, my first ford.

ps: it also needs major service:
-oilflush, new filter and oil.
-airfilter
-sparkplugs
-fuel filter
-new clutch
-heater fan motor, and resistor, fan works only on 1-2-4, 3rd nothing, and motor sounds like death
etc

 

How old is the car. From a mk4 upwards im sure the fan is controlled by the engine ecu. I dont think there is a fan switch that you could simply replace.

 

1996, yes i know that the ecu kicks in the fan, but i also looked some diagrams, and saw that the first sensor was only for the gauge, second might be for the ecu, and it was fault too, when i measured it.