Fist of all,greetings for all,I'am new on this forum,I have Fiat Temra 2.0ie cat 1992.I have problem with cooling system,fan is turn on when temperature is about 97 C,and fan works just for seconds,I have replaced thermostat,Thermo swich (on the radiator),does anybody have idea what is problem?Does sensor on thernostat(blue one)can cause this problem?Thanks

Hello ; Good evening
I have red your problem but for good analysis you must tell me some fields.
1- check for the cooler fan starting temperature when the motor is warming up from cooling status.
2- check for the circulation of the water inside the motor.
3- check for the temperature sensor at the motor body for connection.

If it has air con, then, theres a resistor built in the radiator casing on rear, that runs the fan slowly, if this goes, it can cause your symptons

Or not enough circulation of coolant fluid.