Hi guys…….I'm having a little problem with my A3 1.8SE. When the car is warmed up it cuts out. It does restart after a few minutes though. I may have headgasket problems I've been told. Does my car have some sort of auto cut-off switch to stop the engine getting too damaged? I have had the car on a garage's diagnostics machine and it's showing my throttle body might be at fault. Could it be the same thing or have i got 2 different headaches?

Thanks in advance