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T-Cut · 25th April 2018, 18:21

Water coolant temperature

You should know that the 'normal' or 9o'clock position on the dash temperature gauge is relatively meaningless. The needle reaches that point when the coolant temperature is only 75C (way too low) and will stay there unless it reaches 115C (rather too hot). So, driving at gauge 'normal' means nothing I'm afraid. The correct running temperature is around 90C for typical conditions. Obviously this is variable situation. So, if stop-start traffic prevails, the engine may warm up more and the cooling fan should trip on at 100C. But the only way to know what's going on is to drive with the trip screen in Diagnostic Mode.

Diagnostic Mode (you need section 7): https://the75andztclub.co.uk/forum/s...ad.php?t=55585

Or fit a proper temperature gauge.

TC

25th April 2018, 18:21	#6
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Water coolant temperature You should know that the 'normal' or 9o'clock position on the dash temperature gauge is relatively meaningless. The needle reaches that point when the coolant temperature is only 75C (way too low) and will stay there unless it reaches 115C (rather too hot). So, driving at gauge 'normal' means nothing I'm afraid. The correct running temperature is around 90C for typical conditions. Obviously this is variable situation. So, if stop-start traffic prevails, the engine may warm up more and the cooling fan should trip on at 100C. But the only way to know what's going on is to drive with the trip screen in Diagnostic Mode. Diagnostic Mode (you need section 7): https://the75andztclub.co.uk/forum/s...ad.php?t=55585 Or fit a proper temperature gauge. TC