2015 Dart misfire problems.

[SeemzLegit]

There isn't a Dart sub forum, so I hope it's ok to post here.

But my wife's car has been having what seems to be a misfire or a fluttering thing going on. It happens when sitting idle or giving it gas. I have changed the plugs, coils and the fuel pump relay. Even put it on the computer at autozone and it said I needed to change the map censor which I did. At first it will run fine. But after a while it will start to misfire/flutter again. Was going to replace the fuel pump but wanted to get other opinions. Have no idea what to try next before I take it to the shop.
Thanks.

[SeemzLegit]

What a lazy dead forum. Ill go somewhere else.

[liliviolet]

i know right

[shorod]

There's really no diagnostic code for "MAP sensor is bad" but rather there are codes that indicate sensor readings that are not what is expected. Based on your symptoms, I would suspect you have a vacuum leak somewhere that is causing the MAP sensor code and the fluttering/misfire. A vacuum leak will cause the system to see more air and run leaner than what the MAP sensor expects.

-Rod