Hi everyone ! just become a new member and own a st 170 and 1.8 edge on a 2004. Having problems with the focus 1.8 edge petrol that has covered 84,000 miles and is totally mint condition which i have owned for over two years and problem free. SOURCE: Car overheating; cooling fan not working This is most likely caused by a bad sensor in the radiator. I have never repaired this on a ford focus so I can't tell you where the sensor is located but if you find the sensor and then make a jumper wire and remove the wire from the sensor and jump the two wires together and turn the car ON (don't start the car) if the fan runs, the sensor is Bare in mind that video is for 2.0 TDCi which is a totally different engine to the 1.8 TDCi. 663 posts · Joined 2008. #1 · Mar 23, 2016. I did a video on replacing the thermostat: How to: Ford Mondeo & Focus (Duratec HE) thermostat replace. Watch on. Mondeo 2002 liftback 2.0 Duratec auto in Panther Black. My YouTube channel. mondeo df and Mart1001. Save Share. I did test drive it few times and after about 35 - 40 miles on motorway 70-80 miles/hour it will lose coolant. It won't happen for the first 25-35 miles at all. It seems like once coolant riches higher system won't hold it and it goes in one big splash. In the town it takes about 10-15 miles in traffic and than it goes. Engine temperature is ok. The coolant temperature sensor on your vehicle monitors the temperature of your cooling system and feeds the temperature gauge or temperature warning light on your dash. This helps prevent damage to your engine due to overheating, which may be caused by low cooling system levels, radiator or thermostat failure, and other factors. axYJVu.

ford mondeo 1.8 tdci coolant temperature sensor location