Timbo Posted December 9, 2013 Share Posted December 9, 2013 Hi all. I recently had the thermostat replaced in my 1.8 petrol Mondeo, as the heater was taking ages to get warm enough, although the temp gauge climbs to 90 degrees fairly quickly. The garage said that my radiator fan is coming on at only 89 degrees, which may show why the heater isn't great! The temp gauge doesn't change when the fan comes on either, as you may expect it to do. Is there a combined sensor on these cars, as that could provide a reason for these faults, or are they all separate? ie Radiator fan sensor, coolant temp sensor etc. Many thanks Tim Quote Link to comment Share on other sites More sharing options...
mick85 Posted December 9, 2013 Share Posted December 9, 2013 There coolant temp sensor an ecu controls fan coming on have u checked water pump is pumping properly Quote Link to comment Share on other sites More sharing options...
Timbo Posted December 9, 2013 Author Share Posted December 9, 2013 Hi, thanks for the reply. If the pump wasn't working, I would expect the car to show signs of over-heating. The fan is coming on before the thermostat has even opened properly at the moment. Cheers Tim Quote Link to comment Share on other sites More sharing options...
mick85 Posted December 9, 2013 Share Posted December 9, 2013 We'll thermostat open between 83 an 89 don't have exact figure an if u not good heating indicates a blockage possibly partially blocked matrix that why fan cutting in early bad circulation possibly but coolant temp sensor or ecu also could be at fault Quote Link to comment Share on other sites More sharing options...
Timbo Posted December 9, 2013 Author Share Posted December 9, 2013 Thanks! Tim Quote Link to comment Share on other sites More sharing options...
mick85 Posted December 9, 2013 Share Posted December 9, 2013 Let us know the outcome be interested to know Quote Link to comment Share on other sites More sharing options...
Timbo Posted December 9, 2013 Author Share Posted December 9, 2013 Will do, probably do the coolant sensor first, as it's the cheapest option! Cheers Tim Quote Link to comment Share on other sites More sharing options...
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