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Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by vwgtiking, Jan 17, 2014.
Every now and again, the temp gauge pops over 90 and stays there. See pic. Any reason why??
Could be the coolant temperature sensor playing up. It's hardly a big difference, its not even the thickness of the needle.
Most people probably wouldn't even spot it.
Most of the time it's bang on the line but on rare occasions it's like that as pictured. May be a small air bubble?