I know the first thing to think about is that the fan switch is locked, but I tested 3 new fan switches, and all of them do the same.
The fan switch temp operating is 72-82. When the car reaches the temp, the fan starts, but when the temp goes down the fan donīt stop. testing the temp with a laser temp gun, it checks that the radiator is 55 degrees, but the fans dont stop. The next thing is the fuse, you may think it is locked, but it is not.
Checking the fuse, it works well.
If you disconnect the fan switch, the fan stops, if you disconnect the fuse, the fan stops, what means that the fan switch and fuse work well.
The car does not have thermostat, as I have fitted on top radiator hose a sensor to read the water temp.
The water hoses are new, the alloy radiator is new, the water tank and swirl pot are new. Everything is new.
Im really lost, Any one can help me with this problem???
THanks