Hi all, I’m looking for advice. I own a lovely 200 Morgan 4/4 with a 1.8 duratec engine. Since I’ve owned it I’ve had an issue with the temperature gauge. The car gauge reads 90 degrees for a while but then steadily rises to anywhere between 110-120 when the car is being driven at a constant 3000-3500 revs on the bypass. I’ve checked all over the engine and coolant system with a laser temp reader and all the readings appear normal but the gauge is still showing 110 degrees. I should add that the radiator fan kicks in when the gauge reads 100 and a OBD tester which was used during a run showed the high reading in line with the temperature gauge even though the actual engine temperature tested normal with the laser temp gauge. I’ve also installed a new and tested thermostat which made no difference. I’m now wondering if the engine temperature sensor could be the issue but I’m open to advice.
