Ford Escort goes out while the turn lasts.

Hello, So I have the following problem, if I brake e.g. shortly before an exit, and get slower before the car comes to the stand the engine off (he can then also start again quite normally) The same also occurs if I drive e.g. out of a gyro, so as soon as you drive slower than 15km/h or so. It happens to me that the number of revolutions at the stand is very low….approx. 700-1000. In short, it is unique for every brake at the turn. The number of shots during this time also went up to 4000, without me operating the gas. But only once occurred in the last 5 months. What can this be? Because it is dangerous that the engine runs out in the middle of the traffic, the power steering then switches off and what happened to me once, that the steering wheel lock is locked in. Engine as said can be started in the cold state quite normally without noises etc., so also when driving again without problem e. My car: Ford Escort VII Kombi Built 95 1.6 i 16V 88PS, Zetec Motor Hope someone can help me! Thanks a lot in advance