Audi 80, bad cold start

Hi municipality, just got an heirloom in work:Audi 80, 1987,110tkm, engine code:unfortunately no idea. Problem: he starts, runs round and goes out.When I play the gas he runs at some point during 900 tours. I’ve already made a lot of mistakes in many posts, but it doesn’t make me realize which temperature sensor is responsible for the cold start info? Here are 2 photos.a)Motor. b) the sensor section Would I be happy if someone knows what the 3 sensors/donors are responsible for.