Greetings from Croatia 626 GE 2.5 V6

[JokeCro]

So does this sensor trigger low speed mode directly?

The needle still seems a bit too much to the right, at least from my experience with a 4-cylinder engine the normal temperature is just veeery little to the right side: gallery2.php?g2_itemId=7431
Maybe someone with a V6 engine can confirm...

Otherwise it looks like the fan is still fighting a bad cooling circuit to me(?)

If the fan now turns on much earlier, it means that this sensor is having an effect.

Yes, the needle is a little to the right, because I waited for the moment when the fan would turn on while the car was stationary to take an accurate photo. When I drive on the open road, the needle is in the middle

I managed to find a photo from the ride, the pointer is in the middle

[JokeCro]

Is it possible there is some air left in the cooling system?

[Kampfkuchen]

If it is the sensor, it has to be in a different normal position as before the change. If this isn't the case, I would say: it is not the sensor.

My temperature was always in the middle. A friend has his middle point a bit to the right. But my thermostat was almost new, his wasn't.

My needle never really moved to the right, when the fan starts spinning. But I had a definatelly working low speed