my car stalls and can’t find the solution
hey guys I have a serious problem. So currently I have an automatic 2010 Subaru Impreza 2.5i and right now the car is stalling when the car is parked and has warmed up. I checked the codes and I got the “cylinder 1 and 2 misfire” code and the guys at the auto shop told me to start by changing the spark plugs, and so I started by first switching the sides of the coils, and the same code came up and so I knew that the problem wasn’t in the coils, and so I changed the spark plugs. I then checked again and the code for the oxygen sensor came up and so I then changed the mass airflow sensor, and finally i checked back again and I got the “catalyst fuel efficiency below threshold bank 1” code and so I started by changing the fuel injectors, then the cat sensors both upstream and downstream and finally the cat itself. The problem wasn’t fixed, there’s clear smoke coming from the exhaust, the fuel doesn’t fully combust, the gas smells with a mix of burning plastic and unburnt fuel as if you were standing in a running boat, and when you put the car into drive or reverse, the car shakes and has a high pitch sound as if you were to shake a can of spray or something. Any help is appreciated.