My Twingo accelerates and slows down, then turns off

Very good! I am new and I need the help of the forists, well my problem is as follows, I have a renault twing year 94 which was made engine again about three months ago, the car was working super good until yesterday, which started to come from work I did a few kilometers and the problems began, the car went crazy, scholars Regular in spare parts when these types of problems happen (spark plugs, spark plug, charcoal that carries inside the distributor) changes all that but the same, then buy new bomb, also change it, it remains the same and I already don't know what the problem can be, I listen to your advice to try to solve it to the Twinguito, thank you very much, thank you very much

Hello, there is a sensor that I know as "step by step", I do not remember its technical name, but what it does is that the engine regulates, and when it fails it rises and lowers the turns and turns off. I am not a mechanic but something similar happened to my Kangoo 1.4 N - I hope the data is useful. Greetings and luck

GUSTYSY thank you!!! Danke !!!! Thank you !!!!! Great wave

Noooooo can seeeeeeeeeerrrrrrrrrrrr already change the step -by -step valve, the water temperature sensor of the block, and toooodooo the rest and not solve

Clean the IAC accommodation to see how you are doing.