Fan/ water problem

[Paul Rutherford]

Hi, I was wondering if anybody has had this problem as soon as you start the car the fan is on I have changed the thermostat and also the water pump flushed the whole system though and this is still on, then when you start driving the hot temperature writing on the dash.

All the radiator hoses are stone cold and this is after the car has been running.

The car in question is a bmw 320d 2008 sport.

Any help would be really helpful

Thank you in advance

[Greydog]

Welcome to the Forum Paul

First thought is the thermostat correct and working ? Next you have changed the water pump, is it fitted correctly is it's rotation correct? 

How much coolant went in? (should be between 8.5 and 10 ltrs) Was the heater set to max and engine running cap off to bleed any air out of the system?

Lastly the fan sensor and wiring need checking (I believe the sensor is in the bottom hose)

Dave