Rpm drop / Late reaction of gas

When the vehicle touches the gas suddenly while working with the gas, the engine reacts late. I tried stopping. There is no problem while in gasoline .. Especially when shifting the gear and making intermediate gas, it does not respond immediately to the gas, the engine seems to be drowned. & nbsp; I did not have gas maintenance, I said from him, we did gas maintenance did not change much. There is a black piece on top of the Gazci engine, he said. I think I forgot the speed sensor ..

& nbsp; track potential meter

He showed the piece in the picture, but the problem may not be due to him. He said that the cycle is increasing and decreasing and he showed that piece. The problem happens only at the moment of the first move. When the car gives gas when it is idle, it does not get it late or eats.

idle circuit. The arrow in the image similar to the room potentiometer also appears 10 cm to the right of the part shown, even though I do not know the idler step-by-step, the problem will disappear completely when it changes it ...

How long is the price of that piece. But when the vehicle is idling, the speed is normal, just the first thing I said when getting up. So when you gas while idling ...

When I opened the subject, I did not care much about summer months, when the weather gets cold, the engine kicks at very low speeds. Of course, this problem is normal, so it wants to lower the gear, but can the gas react late to spark plugs?