Dave Mc

I will check that tomoro, I think I have a infrared one in work that I can use, and I thought there was only one coolant temp sensor As it stands now I thought or think I have replaced all components of the cooling system (some more than once) and that I was missing a one way valve or something, a blockage i would have thought would cause over heating rather than over cooling ? Cabin heat starts very quick and gets very warm so I dont know Has anyone an idea of where to get a cooling system diagram? Ive looked and keep getting alot of variant models and not very detailed, it is a 2012 a6 c7 2.0tdi 177hp with auto box Thanks again lads for getting back to me, really appreciate it 👍

It was like this when he got the car about 7 years ago but mpg and a failed dpf brought to attention now Its my father's car and he just ignored it The car prob takes 10km or so to get to temp on a motorway and when it gets to 4 bars if you reduce speed or traffic it will drop down to 3 bars, used to be worse but with all the new parts it has improved but its not perfect I havnt done anymore with it since I posted this as im out of options and ideas

Hi Steve There is no bag visible in the coolant bottle but if the hearing matrix was stuck would this not slow coolant flow down and increase rise of temperature ? The heating in the cabin is fine and works very fast If it is a bag lost in the system, is it just a case of stripping everything down until I find the remains of it or is there a common place like the water pump where it will be found ?

Hi cliff, yes it has a second stat behind the engine, I have changed that twice (1 original audi and a gates one) The stat not seated properly I wouldnt think could be an issue as it is inside the plastic housing, I didnt just replace the element itself but the entire housing each time Sum total of parts 3 main thermostats 2 secondary (dsg i beileve) 1 coolant temp sensor Both coolant control valves

Hi as mentioned in the title this issue is driving me insane !!! 2012 audi a6 c7, 2.0tdi 177hp automatic Car takes a long time to heat up to 90°(4 bars), when it eventually does it will drop down to (3 bars) when going down hill and engine isnt under load. I have done the main thermostat 3 times (1 genuine audi, 2 non original), I have done the DSG thermostat 2 times (1 genuine audi, 1 gates), replaced the coolant temp sensor once too, the fans arn't running constantly either I've checked. Oh and I've also done both coolant control valves, one on the passanger side at the windscreen and the other on the side of the gearbox. Nothing has changed and the problem is still exactly the same, please tell me someone knows what I am missing here, I am at a complete loss and its driving me to the point I want to just get rid of the car, its heavy on fuel too as it takes a long time to heat up so it dosnt reach proper operational temp on short drives. Ive seen many people have the same issues but changing one or both thermostats seems to sort most people out. And I have seem on some vw's have a one way valve somewhere on the system but no mention of it on my car. I WOULD BE SO INCREDIBLY APPRECIATIVE IF SOMEONE KNOWS OR HAS AN IDEA OF WHERE I AM GOING WRONG Thank you