hi, I'm new to this forum and i have a litle question
 

the temperature gauge shows me that the indicator stays ofter the half of the display is it normal... I don't have the possibility to check the real temperature of the cooling fluid

it should be a little to the left the middle, yeah

get your self a new sensor, samething happend to me. just bought a new sensor, and everything worked great after that

You could measure the temperature of the cooling fluid with a aftermarket sensor+gauge, but as long as it's a analog gauge, and the wire-ing has to be done by yourself, the reading won't be that accurate.

If you have a type-K termocouple with a digital readout, there shouldn't be a big variation though: reading should be within 3 degrees accurate.

The question is: Why would you like to have a accurate readout of the cooling temperature, whereas the oil temp is much more important..

This will give you a nice indication:



but this will give you the best reading:




See conrad.de or equiv.