Just a quick update, i did end up buying a temp sensor, sealing ring and clip from VW and it came to less than £30 all in which i was happy enough with for genuine parts.............However! I have since realised that my alternator is on its last legs as when i was running around picking the said parts up i tried to start the car up after leving the dealers and the battery was completely flat!! Luckily the dealers had a jump pack to help me out.So it looks like the failing alternator was either mimicking the temp sensor problems or i have both problems running sise by side! Anyway i have mana