Hi everyone, I just bought a b7 Audi A4 avant. It’s a 115 1.9tdi. I think its a pd engine. Anyway the temperature gauge sat at around 70 degrees or below so I changed the thermostat today. Now it goes up to 90 degrees with the fans blowing on cold but once I put the heating on the temperature drops and hovers around in between 70 and 90. Next port of call is to change the coolant temp sensor. Can anyone let me know where it is located?? Cheers!