SkeeF PRO

As I know in this Audi the air automatically supposed to go out of the system while running. But still believe that good idea to check with vacuum. Actually… Is it possible that air blockage could cause extra pressure in the cooling system? Is the cap on water tank shouldn’t release that extra pressure? 🤔

Hi everyone. Please help 🙏 I’ve got similar issue. For about a year fighting with the problem… I get my next one Audi A3 about a year ago. Actually there was an idea to learn about fixing the cars in practice) due to garages becoming more and over expensive. So at the moment most is sorted in my car. The only problem stays - heater. As I find out the coolant doesn’t run into the Heater Matrix. I have changed thermostat two times (last time the most expensive top grade), new heater matrix installed, new water pump and camber, no leaks, no sweet smells from exhaust, oil in place and good condition. I even have done EGR bypass. Just in case of potential blockage there. Flange checked. Time to time the coolant comes into the system in two cases. On high RPM (over 3000) or Start - Drive 10-15 minutes - Stop and switch off engine for another 10-15 minutes, repeat 5-6 times… Also if I’m driving long distances like motorway for 1-2h the dashboard signals low level of coolant. Ok… I’m very carefully opening the lid of expansion tank to top up the liquid but coolant comes from somewhere in the system back to the tank to the max level! Anyway heater was working about 1 time of 20-30 drives. One of the mechanics ask to check how it will be if I’ll bent a pipe what is going to the radiator. And it makes sense!! Finally! ))) I squeezed the pipe probably enough to reduce the flow in there for 80-90 percent. Heater now works 1 time of 4-6 drives. But still not every time. Maybe in my case additional auxiliary water pump like for parking heater could help to sort it out? Or there could be something else for proper solution? Any ideas? Thanks 🙏

Ok. Understood 👌