Citroen XM Forum

What does this symbol represent, the temperature of what.

Water temperature pre-warning lamp.
"If it lights up slow down."

...yes it lit up for a few seconds, I tried it on a short part of the road to see what speed it could reach, it showed 190 km/h and for a moment that notification lit up.

That's a pretty healthy speed for an atmo diesel., even allowing for spedometer inaccuracy.

Yes, it reached the speed as the factory declares, next time I will use the GPS to check the exact speed.

These days I went to check and refill the air conditioner, for now the weather is bad and there is no need to use it, I still don't know how it cools, if it is strong and meets the needs in high heat.

Those pressures look perfect - did you have to add much gas?

..yes, there were about 90-100 grams of freon in the system, according to the table, there should be 800 grams in the system.

...what could be the problem that sometimes occurs, that when idling it increases the speed of the engine to 1000-1100 rpm.
from where it receives the command to increase engine speed.

Is that at the point the A/c is switched on?

That actually sounds like the cold start fast idle speed, so check the coolant sensor.

Link to Gabor's Series 2 wiring diagrams.
download/file.php?id=9711