Hi Scotty, I am reaching out to you regarding an older A class Mercedes I have (I know you dont like Mercedes) an A140. It's developed a problem where at slow speeds or intersections the engine stalls. It seems to be happening more when it is hot and when diven in the city mainly. lots of stop starting traffic, when it comes out on the open it seems to be much better. I am seeing a lot of forums people refering to the MAF being the issue here and this is a costly exsercise as on this A Class it comes together with the ECU in one item. However, I have have cleaned the MAF and throttle body and flap out and it certainly drove smoother. Problem i am having is i am reading fuel pump issues, lambda sensor issues, seeing cam shaft sensor issues and so many more possibilities. What throws me more is that the Engine check light is not coming on at all, or it does not have one as i have seen video's of other cars the same and they are not showing this light either... but there are no fault codes to be found at all either.... making me think that potentially this could be a fuel pump issue. As that does not throw up error codes. What experience do you have that you can share with me here? Please help :)

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TomTom
TomTom

Yeah its the older, but has the OBDII socket. So i guess in it goes to the workshop for some live scanning whilst problem occours

ScottyKilmer
ScottyKilmer

you really need to start with a scan tool to analyze live data since you have no codes. Anything else, pure guesswork. If it's an obd 2 merc that's easy to do . but if older, you'll need a merc scanner that costs a ton

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