Hi Javier, Bruce and PaulV
The article of Phil was send me a while ago by Phil to me when I discussed my hot engine situation with him.
It confirmed my thought and was an inspiration to find a modest solution.
It is a very good and important point to ask about why the Fan seems so often ON.
I was not sure when the Fan was ON or OFF and expected – by the specs - that it was speed and temperature regulated.
When driving you cannot really hear it.
But I did not trusted the specs. Not really a bad idea with a MMC product.
For me that was actually the beginning of the analyse trajectory.
That is the reason I do advise to install that little LED.
The LED gave me an answer to my ON-OFF question.
In my case it was clear that it had nothing to do with speed but only with Temperature.
When the temperature is lower than programmed in the ECU the Fan is OFF.
After that I went in the Emerald Program and found only one switch that regulates the Fan.
And that switch is only Temperature depended ( the F2 page ).
So that’s the reason too I am interested in somebodies opinion who know how it is programmed in Protune.
Still that whole ECU issue is of less importance.
The main problem is that the shrouds and the direction of the Fan is wrong designed and that should be changed.
And also the Lube oil tank – and with it the Battery - under the bonnet should be cooled.
I too have a light for the fan so I know when the fan is running and it does not run unless going slow or stopped. I would politely suggest that the engine temperatures you posted after the fix are rather low for the X Wedge Engine which is designed to run hot.
