Hello & nbsp; I have been having a misfire problem for a long time. I have a peugeot 206 2007 model 1.4 petrol automatic gearbox. When I run it for the first time, I am experiencing problems such as stapling and falling. While running, I try to heat the vehicle for 10 minutes and then there is a stench. Today the yellow light is on. I got it to the service. tied to the computer. gave catalyz and sensor problem. According to the master, there is a problem with the sensor, he predicted. My vehicle is in service and I think I will learn the situation tomorrow. the throat butterfly said, a clumsy master cleaned 2 times and adapted the result was the same again. I think the problem is I researched a lot in the sensor. I realize that the vehicle is having trouble blowing up the smoke from the exhaust, the engine is choking, the speed is falling, then it rises again, that is, the sheet metal works. The car freezes to normal when the stench comes. If such a problem happened, can you give me information? causes this malfunction? lpg will affect this problem. (I've been using gasoline for 3 months, too yakoo) Would you please transfer your experiences. patience and thanks for reading .. & nbsp;