Hi, sorry to make another thread but I didn't want to hijack the old one someone else just asked for help on.
That thread got me thinking "I've never heard my fan come on, ever...
" and indeed never seen it come on when I've had the bonnet up and engine running. But the temperature *never* goes above the 90 mark, and I've been running her for 6 months, often in lots of traffic, with no apparent harm done (I hope).
Although the coolant is very black. History says thermostat replaced in 2009. No loss of coolant over the 6 months. Coolant return pipe appears to heat up with the engine rather than rush with heat suddenly. It is also chomping through fuel... never got above 28mpg on petrol...
Is it possible my temperature sensor is reading wrongly?
Is my thermostat stuck open (I like this explaination if it means my engine hasn't been cooking itself)
Can you hear the fan from inside the car? And should I have noticed it by now?
Why hasn't my engine siezed up and died?