I am looking for mine too! It is not where the top hose goes from the engine block to the radiator, unless it is like my Citroen Xantia -mounted in the top hose, engine block end. In another post it was mentioned as being near the turbo. Back out into the snow to find it -the heater is too cool for the 0 deg C, 32 deg F curent temp here in the UK. Did you ever find yours?

Regards,

Phil Thomas