Low temperature

[Silvestr]

Hi, I have a problem on my 2004 crd that I hardly ever get the engine up to operating temperature. It's probably not normal for the radiator fan to run immediately after starting, is it? I don't know what affects turning on the cooling. please advise what to look at. Thanks

 

[nbas]

Looks like the thermostat is stuck open...

 

[KJowner]

The thermostats are designed to fail safe, so they stick open. The fan is always spinning but not always doing much, there is a thermostatic clutch that makes it work when the air flow heats up.
If you are in Europe there is a higher temperature thermostat available, not sure about America.
While you are at it it's worth changing the coolant if it hasn't been done recently, don't use anything except HOAT.