Alo to all , I have an Audi a4 diesel estate 1.9tdi 2002 reg I need to replace thermostat as the temp gauge is not responding at all, I have already changed temp sensor and no good so took to local garage who done a diagnostics test and told me to get a new temp clock of "eBay" and they will charge me 2 hrs labour to fit it. I went on this site and noticed these faults point to thermostat issues so I'm reluctant now to go back. And is there a rad drain plug on this model ? Any help would be appreciated thank you