This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and hence not compensated for and can thin the engine out and can as well as permit the engine to rev occurring as soon as not desired causing argumentative running. As its a mechanical oddity it tends not to direction upon the idiosyncrasy fresh and you can sometimes listen a hissing noise in the same way as the engine running.
Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a quick malfunction locate if you unplug the meter and run the engine without it. if the engine condition is the similar next chances are the meter or the relationship to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can acquire coated as soon as dirt higher than epoch which after that offsets the reading. Use some admittance cleaner or brake cleaner to spray can onto the wires to sever the dirt on no account be adjacent to the wires afterward everything as they are totally fragile
I don't have any check engine lights unless I unplug the MAF sensor. with the MAF is plugged in then the car will stall unless I put my foot on the accelerator. There is with an intermittent popping sound coming at idle.