Does anyone have tips on my Twingo?

Hello, I have a Renault Twingo Bj 2000 from 3rd hand since 2006. Now this car has already made me angry for the 4th time in a short time. He suddenly no longer accepts gas at the running engine in the stand. This happens e.g. at a red traffic light. He no longer accepts the gas and goes out even after a short time. This happens however always from today to tomorrow. So a day before e.g. he drives without problems and also the whole day later until suddenly this point comes. It is t also not every day, that last time is about half a year ago. I then have real difficulties to get it from the place, because it always occurs at traffic lights or intersections. Sometimes it works that it then drives again a short piece, but then you notice then also that no gas is taken and then I have to kick it the popo properly to the small one. If then you turn on the engine again, it sounds a while quite normal. Then it comes to you as if the engine was starting from This will take 5 – 10 minutes. When it goes out, it will jump straight back on again, but moving from the place is no longer possible. It also comes before it runs normal again the next day without any problems. Repairs were made as follows: On the first to the third time, the error was stored in the electronics that the suction pressure blower (or as this plug is called) is defective. in the first time deleted and the plug cleaned. On the second time it was renewed and on the third time the error was deleted because it was still in the memory. My workshop (master workshop with a good reputation in Essen) already said the third time when it happened again you could only replace everything and wait for what was broken. So they don’t know exactly what it is every time. I mean that the plug is really new because it can’t lie there. I’m really desperate, because I a I have a sports exhaust from Novus on the small one, could that be a problem too? Unfortunately, I can’t remember if I already had it when the mistake occurred the first time. The exhaust is taken by TÜV and also for this vehicle. Please help me and give me tips what it might be. Just recently spent so much money on new TÜV/HU and new winter tires. If still infos of need are no problem. LG Steffi