Stu Smith Posted December 28, 2023 Share Posted December 28, 2023 Some advice needed please. Car - 2011 Sigma 1.6 not Ti-VCT The water temp gauge fluctuates between 40 - 80 degrees whilst driving, if left idling the gauge will rise slowly to just over 80 and the cooling fan will cut in. I have an oil temperature gauge fitted which remains constant at 85, unless pushing hard on a track day and will rise to 90 -100 but quickly drop to 85 On a cool down lap. It’s done this in my 2 years of owning the car. Could I have a faulty water thermostat or water temperature sender unit? I have looked at just purchasing both a new thermostat and sender unit, but there is a lot of different options on Google. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 30, 2023 Member Share Posted December 30, 2023 Previous discussions: Jonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 30, 2023 Member Share Posted December 30, 2023 (edited) On 28/12/2023 at 14:24, Stu Smith said: Could I have a faulty water thermostat or water temperature sender unit? I have looked at just purchasing both a new thermostat and sender unit, but there is a lot of different options on Google. You can check the thermostat by feeling the temperature of the hoses as the engine warms up. And if there's any doubt by taking it out and watching its behaviour when moved between a jug of very hot water and a jug of cold water. Merry Christmas Jonathan Edited December 30, 2023 by Jonathan Kay Link to comment Share on other sites More sharing options...
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