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Old 23rd May 2019, 05:55   #11
kaiser
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75 Tourer 2.5 Auto, 1.8T, 75V8ZT

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That does not sound like you have lost a lot of coolant.
The "normal" operating temperature is from 85 to 95, give and take. You can see up to 100, but not on an open road with free cooling, unless it is stinking hot! (it is not stinking hot in Denmark! not even by a mile)
The fan is only supposed to increase cooling in a slow moving or stationary vehicle. It should never come on on the open road.
Filling the cooling system on many cars, but especially the V6 can leave pockets of air, if not done thoroughly! That can cause overheating. They will typically be very sudden and quickly subside.
But there should be no spillage before you get much higher in temperature!
Maybe up to 115.
So, here are the scenarios (scenarii ??)
1. You have overfilled the system, and it has coughed some of the water out.
2. The smoke is not smoke, but steam.
3. Your cap has had it. Do what you should do with May! Bin it and get a new!
4. Your measurements are wrong, and the system is operating at a higher temperature, (air around the sensor).
5. You have another problem, maybe stuck thermostat etc.

I would firstly try and keep the cooling system full, to the mark and no higher! Monitor and top up if required.

And check the fan operation. It should indeed come on at about 102 or 104, but that should not normally cause water spillage, if the system is not overfilled.
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