Must say I mentioned level sensor may be faulty, sound like what people say with ad blue gauges problem we have with HGV. The driver is convinced he is using more and keeps topping it up paranoid he will run out but it was the level sensor every time. Obviously this is not the same thing but as you changed other bits it can't be the car using fuel.
exactly aimes. tbh i think al replace it anyway, yeh some of you will be saying what a waste of £110 but at the end of the day al b happier knowing that its changed. its 8 years old after all could possibly be dodgy.