7 minutes ago, Vikigib87 said: all it comes up with is fuel fired heater. Some sensor faults, if intermittent or minor & within range, do not show up as errors. In that case, the only solution may be to change things, starting with the cheapest (I hate that approach, but sometimes it is the only way).
Does anyone know whether the Mk3 mondeo 1.8 petrol has two different coolant temperature sensors (one for the guage and one for the ECU) like the Mk2? I know there is one built into the thermostat housing, but not sure whether this is for guage, ECU or both. 4. Remove the retaining clip holding the sensor in place. 5. Be sure you have the new rubber O-ring on the new sensor. 5a.Remove the old sensor, being prepared for coolant to come out. 5b.Pull and twist the sensor, it should come out fairly easily. 5c.Check to be sure the rubber O-Ring came out with the old sensor. 6. 05 2.0 TDCi Overcooling - argosgold : Bought an '05 Ford Mondeo III in December 2009. Despite cold weather, engine was fine and up to temperature (as far as I can remember) for the first week or so. Last week, it stalled a few times (-15C outside) due to the diesel waxing up. I really need help with my mondeo (Mondeo MK4 1.8 TDCi 10/2007). I have read millions of topics about this issue but with no match with my case. Look at outside temperature. It is showing 3 dashes ("---") instead of numbers and engine temperature gauge falls down when the engine is warmed up like on this video: My silver miracle (local ford elKoKwE.