Hi all need some advice on my 53 plate 1.6 zafira. Tonight whilst driving the temp gauge went right up to 100, then when i decelerate it goes down again, speed up to about 70-80mph it goes up again? There is plenty of water in it and as far as i can tell no leaks, and its running fine, just the temp gauge is going up and down randomly at different speeds?? any ideas? Thank you
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