hi, on the right hand side of the engine as you look at it from the front, there is a small auxillary drive belt that drives the water pump and power steering, where the top pulley is the temp sensor is behind the pulley in the side of the engine, with a black wire on it and a grey multil plug on the end, only problem is you need a special socket to undo it with, its not the easiest sensor to get at, also it has to be tourqed up correctly, i think its 10nm, any tighter or looser and it can affect your temp gauge reading, it's a job for ford really, hope this helps.