Megane II 1.6 16V engine goes off Have the following problem: When I start, the engine goes off again after 2-5 seconds. If I start immediately, it won’t go off after 300m drive. Also the speed increase to approx. 1.200 rpm no longer works (for cold start). If it is warm, it runs. I suspect that a temperature sensor is defective. There is the motor temperature sensor and the coolant temp. Sensor. Where do these sensors sit and can you change them yourself? Which of the two k Could be rather defective? I would be happy if someone could help me.