rs200 Posted February 16, 2017 Share Posted February 16, 2017 Is this normal temp, for a 2.0 tdci. With no heating on ?? Can get the needle into the middle where i presume is normal operating temp by driving car hard. yet when i ease off needle drops to where it is in pic. Just wondering if car is overcooling Quote Link to comment Share on other sites More sharing options...
andypsp Posted February 16, 2017 Share Posted February 16, 2017 nothing wrong with that, so don`t worry. Quote Link to comment Share on other sites More sharing options...
rs200 Posted February 17, 2017 Author Share Posted February 17, 2017 Same journey with heating on full, blowing on number 2 Quote Link to comment Share on other sites More sharing options...
Guzzilazz Posted February 17, 2017 Share Posted February 17, 2017 If you can get hold of a IR Pyrometer (I got a Black & Decker one for about £25, which is good enough for this sort of work) point it at the area of the block adjacent to the coolant sensor and see what the temp is. I reckon it's either the gauge or sensor being inaccurate, but once you know you can "re baseline" your normal... Easier to check that than anything else... except, maybe, when the engine's cold and just started, put your hand on the top rad hose, and feel if it warms up fairly quickly... if it does maybe your 'stat isn't closing properly Quote Link to comment Share on other sites More sharing options...
JW1982 Posted February 17, 2017 Share Posted February 17, 2017 Be aware that the temperature gauge does not show realtime values. The temperature gauge shows a value that is calculated by the PCM. The PCM uses the data of several sensors to calculate the actual coolant temperature value. This value is communicated by the CANbus network to the instrument cluster. This behavior of the temperature gauge is completely normal during winter. Modern Diesel engines are quite efficient. They simply do not generate a lot of heat. In the winter many modern Diesel engines do not generate enough heat to warm up both the engine and the interior. Under high load the engine may generate enough heat to keep both the engine and interior warm. However when idling or under low load the engine will not generate enough heat. When the engine does not generate enough heat to keep both the engine en interior warm the coolant temperature will simply drop. Many modern Diesel engines do have heating elements inside the coolant system to warm up the engine faster and keeping it warm when the engine itself does not generate enough heat. Next to this Ford uses the (optional) PTC heater system in some cold climate countries to solve this problem. This system consists of an electronically controlled electric heating element which is mounted inside the heater housing to warm up the interior. When the PTC heater system is active there will be a lot less heat of the engine used to warm up the interior. The PTC heater system automatically shuts down if the engine temperature is above 80 degrees Celsius. 1 Quote Link to comment Share on other sites More sharing options...
isetta Posted February 17, 2017 Share Posted February 17, 2017 that's about the same as my fiesta 1.6tdci was which I bought at 6 months old and had for 9 years. It was always like that. Diesels are relatively efficient engines that do not create as much excess heat as petrol engines. If I drove somewhere to collect my daughter and sat in the car with engine running and heating on with fan in the slowest position whilst waiting for her, the temp guage would gradually go down and down. on tickover the engine it produced so little excess heat it could not even keep up with keeping me slightly warm. 1 Quote Link to comment Share on other sites More sharing options...
rs200 Posted February 21, 2017 Author Share Posted February 21, 2017 Thanks , has put my mind at ease Quote Link to comment Share on other sites More sharing options...
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