1) Try checking that your fan works. Disconnect the power supply that goes into your fan, getting a piece of wire, connect two of the pins together and if that dosen't work then connect one of the pins that you tried to the other. If the fan still fails to operate the the problem is your fan.
2) If the fan works then replace your fan switch which will cost you around £10.00.
3) If the problem persists then you will have to replace your coolant temperature sensor which will cost you around £10.00.
This may confuse you and I am sorry if it does. Some things I find hard to explain. If you want to know where everything is or need more detail then e-mail me at: trit666@hotmail.com . Giving me your engine size and what you need to know.
Kind Regards.
Tristan Hanwell, March 2006